Bootstrap 5: Utility

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Utility/Pomocné třídy

Bootstrap 5 má spoustu pomocných tříd pro rychlé stylování prvků bez použití kódu CSS.

Hranice

Pomocí tříd border můžete přidat nebo odebrat ohraničení z prvku:

Příklad

<span class="border"></span>
<span class="border border-0"></span>
<span class="border border-top-0"></span>
<span class="border border-end-0"></span>
<span class="border border-bottom-0"></span>
<span class="border border-start-0"></span>
<br>
<span class="border-top"></span>
<span class="border-end"></span>
<span class="border-bottom"></span>
<span class="border-start"></span>

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
  <style>
  span {
    display: inline-block;
    width: 70px;
    height: 70px;
    margin: 6px;
    background-color: #f9f9f9;
  }
  </style>
</head>
<body>

<div class="container mt-3">
  <h2>Borders</h2>
  <p>Use the border classes to add or remove borders from an element:</p> 

  <span class="border"></span>
  <span class="border border-0"></span>
  <span class="border border-top-0"></span>
  <span class="border border-end-0"></span>
  <span class="border border-bottom-0"></span>
  <span class="border border-start-0"></span>
  <br>
  
  <span class="border-top"></span>
  <span class="border-end"></span>
  <span class="border-bottom"></span>
  <span class="border-start"></span>
</div>

</body>
</html>

Šířka okraje

Chcete-li změnit šířku ohraničení, použijte .border-1 až .border-5:

Příklad

<span class="border border-1"></span>
<span class="border border-2"></span>
<span class="border border-3"></span>
<span class="border border-4"></span>
<span class="border border-5"></span>

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
  <style>
  span {
    display: inline-block;
    width: 70px;
    height: 70px;
    margin: 6px;
    background-color: #f9f9f9;
  }
  </style>
</head>
<body>

<div class="container mt-3">
  <h2>Border Width</h2>
  <p>Use .border-1 to .border-5 to change the width of the border:</p> 

  <span class="border border-1"></span>
  <span class="border border-2"></span>
  <span class="border border-3"></span>
  <span class="border border-4"></span>
  <span class="border border-5"></span>
</div>

</body>
</html>

Barva ohraničení

Přidejte barvu k ohraničení pomocí kterékoli z kontextových tříd barev ohraničení:

Příklad

<span class="border border-primary"></span>
<span class="border border-secondary"></span>
<span class="border border-success"></span>
<span class="border border-danger"></span>
<span class="border border-warning"></span>
<span class="border border-info"></span>
<span class="border border-light"></span>
<span class="border border-dark"></span>
<span class="border border-white"></span>

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
  <style>
  .border {
    display: inline-block;
    width: 70px;
    height: 70px;
    margin: 6px;
  }
  </style>
</head>
<body>

<div class="container mt-3">
  <h2>Borders</h2>
  <p>Use a contextual border color to add a color to the border:</p> 
  <span class="border border-primary"></span>
  <span class="border border-secondary"></span>
  <span class="border border-success"></span>
  <span class="border border-danger"></span>
  <span class="border border-warning"></span>
  <span class="border border-info"></span>
  <span class="border border-light"></span>
  <span class="border border-dark"></span>
  <span class="border border-white"></span>
</div>

</body>
</html>

Poloměr okraje

Přidejte zaoblené rohy k prvku s třídami zaoblené:

Příklad

<span class="rounded"></span>
<span class="rounded-top"></span>
<span class="rounded-end"></span>
<span class="rounded-bottom"></span>
<span class="rounded-start"></span>
<span class="rounded-circle"></span>
<span class="rounded-pill" style="width:130px"></span>
<span class="rounded-0"></span>
<span class="rounded-1"></span>
<span class="rounded-2"></span>
<span class="rounded-3"></span>
<span class="rounded-4"></span>
<span class="rounded-5"></span>

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
  <style>
  span {
    display: inline-block;
    width: 70px;
    height: 70px;
    margin: 6px;
    background-color: #555;
  }
  </style>
</head>
<body>

<div class="container mt-3">
  <h2>Borders</h2>
  <p>Round the corner of an element with the rounded classes:</p> 
  <span class="rounded"></span>
  <span class="rounded-top"></span>
  <span class="rounded-end"></span>
  <span class="rounded-bottom"></span>
  <span class="rounded-start"></span>
  <span class="rounded-circle"></span>
  <span class="rounded-pill" style="width:130px"></span>
  <br>
  <span class="rounded-0"></span>
  <span class="rounded-1"></span>
  <span class="rounded-2"></span>
  <span class="rounded-3"></span>
  <span class="rounded-4"></span>
  <span class="rounded-5"></span>
</div>

</body>
</html>

Float a Clearfix

Umístit prvek doprava pomocí třídy .float-end nebo doleva pomocí .float-start a vymažte plovoucí objekty pomocí třídy .clearfix:

Příklad

Float left Float right

<div class="clearfix">
  <span class="float-start">Float left</span>
  <span class="float-end">Float right</span>
</div>

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Float</h2>
  <p>Float an element to the right with the .float-end class or to the left with .float-start, and clear floats with the .clearfix class.</p> 
  <div class="clearfix">
    <span class="float-start">Float left</span>
    <span class="float-end">Float right</span>
  </div>
</div>

</body>
</html>

Responzivní plováky

Plovoucí prvek doleva nebo doprava v závislosti na šířce obrazovky pomocí responzivních plovoucích tříd (.float-*-start|end - kde * je sm (>=576px), md (>=768px), lg (>=992px), xl (>=1200px) nebo xxl (>=1400px) )):

Příklad

Float right on small screens or wider

Float right on medium screens or wider

Float right on large screens or wider

Float right on extra large screens or wider

Float right on XXL screens or wider

Float none

<div class="float-sm-end">Float right on small screens or wider</div><br>
<div class="float-md-end">Float right on medium screens or wider</div><br>
<div class="float-lg-end">Float right on large screens or wider</div><br>
<div class="float-xl-end">Float right on extra large screens or wider</div><br>
<div class="float-xxl-end">Float right on XXL screens or wider</div><br>
<div class="float-none">Float none</div>

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Responsive Floats</h2>
  <p>Float an element to the left or to the right depending on screen width, with the responsive float classes .float-*-left|right (where * is sm, md, lg, xl or xxl).</p>
  <p>Resize the browser window to see the effect.</p> 
  <div class="clearfix">
    <div class="float-sm-end">Float right on small screens or wider</div><br>
    <div class="float-md-end">Float right on medium screens or wider</div><br>
    <div class="float-lg-end">Float right on large screens or wider</div><br>
    <div class="float-xl-end">Float right on extra large screens or wider</div><br>
    <div class="float-xxl-end">Float right on XXL screens or wider</div><br>
    <div class="float-none">Float none</div>
  </div>
</div>

</body>
</html>

Zarovnání na střed

Vycentrujte prvek pomocí třídy .mx-auto (přidá margin-left a pravý okraj: auto):

Příklad

Centered

<div class="mx-auto bg-warning" style="width:150px">Centered</div>

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Horizontal Centering</h1>
  <p>Center an element with the .mx-auto class:</p>
  <div class="mx-auto bg-warning" style="width:150px">Centered</div>
</div>

</body>
</html>

Šířka

Nastavte šířku prvku pomocí tříd w-* (.w-25, .w-50 , .w-75, .w-100, . w-auto a .mw-100):

Příklad

Width 25%

Width 50%

Width 75%

Width 100%

Auto Width

Max Width 100%

<div class="w-25 bg-warning">Width 25%</div>
<div class="w-50 bg-warning">Width 50%</div>
<div class="w-75 bg-warning">Width 75%</div>
<div class="w-100 bg-warning">Width 100%</div>
<div class="w-auto bg-warning">Auto Width</div>
<div class="mw-100 bg-warning">Max Width 100%</div>

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Width Utilities</h1>
  <p>Set the width of an element with the w-* classes:</p>
  <div class="w-25 bg-warning">Width 25%</div>
  <div class="w-50 bg-warning">Width 50%</div>
  <div class="w-75 bg-warning">Width 75%</div>
  <div class="w-100 bg-warning">Width 100%</div>
  <div class="w-auto bg-warning">Auto Width</div>
  <div class="mw-100 bg-warning">Max Width 100%</div>
</div>

</body>
</html>

Výška

Nastavte výšku prvku pomocí tříd h-* (.h-25, .h-50 , .h-75, .h-100, . h-auto a .mh-100):

Příklad

Height 25%

Height 50%

Height 75%

Height 100%

Auto Height

Max Height 100%

<div style="height:200px;background-color:#ddd">
  <div class="h-25 bg-warning">Height 25%</div>
  <div class="h-50 bg-warning">Height 50%</div>
  <div class="h-75 bg-warning">Height 75%</div>
  <div class="h-100 bg-warning">Height 100%</div>
  <div class="h-auto bg-warning">Auto Height</div>
  <div class="mh-100 bg-warning" style="height:500px">Max Height 100%</div>
</div>

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Height Utilities</h1>
  <p>Set the height of an element with the h-* classes:</p>
  <div style="height:200px;background-color:#ddd">
    <div class="h-25 d-inline-block p-2 bg-warning">Height 25%</div>
    <div class="h-50 d-inline-block p-2 bg-warning">Height 50%</div>
    <div class="h-75 d-inline-block p-2 bg-warning">Height 75%</div>
    <div class="h-100 d-inline-block p-2 bg-warning">Height 100%</div>
    <div class="h-auto d-inline-block p-2 bg-warning">Auto Height</div>
    <div class="mh-100 d-inline-block p-2 bg-warning" style="height:500px">Max Height 100%</div>
  </div>
</div>

</body>
</html>

Vzdálenost

Bootstrap 5 má širokou škálu responzivních tříd marže a výplně. Fungují pro všechny zarážky: xs (<=576px), sm (>=576px), md (>=768px), lg (>=992px), xl (>=1200px) nebo xxl (>=1400px)):

Třídy se používají ve formátu: {property}{sides}-{size} pro xs a < kód class="w3-codespan">{property}{sides}-{breakpoint}-{size} pro sm, md, lg, xl a xxl.

Kde vlastnost je jedna z:

m - nastaví marži
p - nastaví odsazení

Kde strany je jedna z:

t - nastaví nahoře na okraji nebo na horním okraji kód>
b - nastaví margin-bottom nebo padding-bottom
s - nastaví margin-left nebo padding-left
e - nastaví pravý okraj nebo pravý padding
x - nastaví padding-left a padding-right nebo margin-left a margin-right
y - nastaví jak padding-top, tak padding-bottom nebo margin-top a margin-bottom
prázdné - nastaví okraj nebo výplň na všech 4 stranách prvku

Kde velikost je jedna z:

0 - nastaví okraj nebo odsazení na < kód class="w3-codespan">0
1 - nastaví okraj nebo odsazení na < code class="w3-codespan">.25rem
2 - nastaví okraj nebo odsazení na < code class="w3-codespan">.5rem
3 - nastaví okraj nebo odsazení na < kód class="w3-codespan">1rem
4 - nastaví okraj nebo odsazení na < kód class="w3-codespan">1.5rem
5 - nastaví okraj nebo odsazení na < code class="w3-codespan">3rem
auto - nastaví marži na auto

Příklad

I only have a top padding (1.5rem)

I have a padding on all sides (3rem)

I have a margin on all sides (3rem) and a bottom padding (3rem)

<div class="pt-4 bg-warning">I only have a top padding (1.5rem)</div>
<div class="p-5 bg-success">I have a padding on all sides (3rem)</div>
<div class="m-5 pb-5 bg-info">I have a margin on all sides (3rem) and a bottom padding (3rem)</div>

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Spacing Utilities</h1>
  <p>Set the spacing of an element with the {property}{sides}-{breakpoint}-{size} classes. Omit breakpoint if you want the padding or margin to work on all screen sizes.</p>
  <div class="pt-4 bg-warning">I only have a top padding (1.5rem)</div>
  <div class="p-5 bg-success">I have a padding on all sides (3rem)</div>
  <div class="m-5 pb-5 bg-info">I have a margin on all sides (3rem) and a bottom padding (3rem)</div>
</div>

</body>
</html>

Další příklady mezer

`.m-# / m-*-#`

Popis: okraj na všech stranách

Zkus to

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Spacing Utilities</h1>
  <p>Set the spacing of an element with the {property}{sides}-{breakpoint}-{size} classes. Omit breakpoint if you want the padding or margin to work on all screen sizes.</p>
  <div class="pt-4 bg-warning">I only have a top padding (1.5rem)</div>
  <div class="p-5 bg-success">I have a padding on all sides (3rem)</div>
  <div class="m-5 pb-5 bg-info">I have a margin on all sides (3rem) and a bottom padding (3rem)</div>
</div>

</body>
</html>

`.mt-# / mt-*-#`

Popis: horní okraj

Zkus to

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Margin Top Utilities</h1>
  <div class="mt-0 bg-warning">Margin Top 0</div>
  <div class="mt-1 bg-warning">Margin Top 1</div>
  <div class="mt-2 bg-warning">Margin Top 2</div>
  <div class="mt-3 bg-warning">Margin Top 3</div>
  <div class="mt-4 bg-warning">Margin Top 4</div>
  <div class="mt-5 bg-warning">Margin Top 5</div>
  <div class="mt-auto bg-warning" style="width:150px">Margin Top Auto</div>
  <br>

  <p>Responsive margin top utilities. Resize the browser window to see the effect:</p>
  <div class="mt-sm-5 bg-warning">Margin Top 5 on SM screens</div>
  <div class="mt-md-5 bg-warning">Margin Top 5 on MD screens</div>
  <div class="mt-lg-5 bg-warning">Margin Top 5 on LG screens</div>
  <div class="mt-xl-5 bg-warning">Margin Top 5 on XL screens</div>
</div>

</body>
</html>

`.mb-# / mb-*-#`

Popis: dolní okraj

Zkus to

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Margin Bottom Utilities</h1>
  <div class="mb-0 bg-warning">Margin Bottom 0</div>
  <div class="mb-1 bg-warning">Margin Bottom 1</div>
  <div class="mb-2 bg-warning">Margin Bottom 2</div>
  <div class="mb-3 bg-warning">Margin Bottom 3</div>
  <div class="mb-4 bg-warning">Margin Bottom 4</div>
  <div class="mb-5 bg-warning">Margin Bottom 5</div>
  <div class="mb-auto bg-warning" style="width:150px">Margin Bottom Auto</div>
  <br>

  <p>Responsive margin bottom utilities. Resize the browser window to see the effect:</p>
  <div class="mb-sm-5 bg-warning">Margin Bottom 5 on SM screens</div>
  <div class="mb-md-5 bg-warning">Margin Bottom 5 on MD screens</div>
  <div class="mb-lg-5 bg-warning">Margin Bottom 5 on LG screens</div>
  <div class="mb-xl-5 bg-warning">Margin Bottom 5 on XL screens</div>
</div>

</body>
</html>

`.ms-# / ms-*-#`

Popis: okraj vlevo

Zkus to

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Margin Left Utilities</h1>
  <div class="ms-0 bg-warning">Margin Left 0</div>
  <div class="ms-1 bg-warning">Margin Left 1</div>
  <div class="ms-2 bg-warning">Margin Left 2</div>
  <div class="ms-3 bg-warning">Margin Left 3</div>
  <div class="ms-4 bg-warning">Margin Left 4</div>
  <div class="ms-5 bg-warning">Margin Left 5</div>
  <div class="ms-auto bg-warning" style="width:150px">Margin Left Auto</div>

  <p>Responsive margin left utilities. Resize the browser window to see the effect:</p>
  <div class="ms-sm-5 bg-warning">Margin Left 5 on SM screens</div>
  <div class="ms-md-5 bg-warning">Margin Left 5 on MD screens</div>
  <div class="ms-lg-5 bg-warning">Margin Left 5 on LG screens</div>
  <div class="ms-xl-5 bg-warning">Margin Left 5 on XL screens</div>
</div>

</body>
</html>

`.me-# / me-*-#`

Popis: okraj vpravo

Zkus to

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Margin Right Utilities</h1>
  <div class="me-0 bg-warning">Margin Right 0</div>
  <div class="me-1 bg-warning">Margin Right 1</div>
  <div class="me-2 bg-warning">Margin Right 2</div>
  <div class="me-3 bg-warning">Margin Right 3</div>
  <div class="me-4 bg-warning">Margin Right 4</div>
  <div class="me-5 bg-warning">Margin Right 5</div>
  <div class="me-auto bg-warning" style="width:150px">Margin Right Auto</div>
  <br>
  
  <p>Responsive margin left utilities. Resize the browser window to see the effect:</p>
  <div class="me-sm-5 bg-warning">Margin Right on SM screens</div>
  <div class="me-md-5 bg-warning">Margin Right on MD screens</div>
  <div class="me-lg-5 bg-warning">Margin Right on LG screens</div>
  <div class="me-xl-5 bg-warning">Margin Right on XL screens</div>
</div>

</body>
</html>

`.mx-# / mx-*-#`

Popis: levý a pravý okraj

Zkus to

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Margin Left and Right Utilities</h1>
  <p>Margin X utilities:</p>
  <div class="mx-0 bg-warning">Margin X 0</div>
  <div class="mx-1 bg-warning">Margin X 1</div>
  <div class="mx-2 bg-warning">Margin X 2</div>
  <div class="mx-3 bg-warning">Margin X 3</div>
  <div class="mx-4 bg-warning">Margin X 4</div>
  <div class="mx-5 bg-warning">Margin X 5</div>
  <div class="mx-auto bg-warning" style="width:150px">Margin X Auto</div>
  <br>
  
  <p>Responsive margin x utilities. Resize the browser window to see the effect:</p>
  <div class="mx-sm-5 bg-warning">Margin X 5 on SM screens</div>
  <div class="mx-md-5 bg-warning">Margin X 5 on MD screens</div>
  <div class="mx-lg-5 bg-warning">Margin X 5 on LG screens</div>
  <div class="mx-xl-5 bg-warning">Margin X 5 on XL screens</div>
</div>

</body>
</html>

`.my-# / my-*-#`

Popis: horní a dolní okraj

Zkus to

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Margin Top and Bottom Utilities</h1>
  <p>Margin Y utilities:</p>
  <div class="my-0 bg-warning">Margin Y 0</div>
  <div class="my-1 bg-warning">Margin Y 1</div>
  <div class="my-2 bg-warning">Margin Y 2</div>
  <div class="my-3 bg-warning">Margin Y 3</div>
  <div class="my-4 bg-warning">Margin Y 4</div>
  <div class="my-5 bg-warning">Margin Y 5</div>
  <div class="my-auto bg-warning">Margin Y Auto</div>
  <br>
  
  <p>Responsive margin y utilities. Resize the browser window to see the effect:</p>
  <div class="my-sm-5 bg-warning">Margin Y 5 on SM screens</div>
  <div class="my-md-5 bg-warning">Margin Y 5 on MD screens</div>
  <div class="my-lg-5 bg-warning">Margin Y 5 on LG screens</div>
  <div class="my-xl-5 bg-warning">Margin Y 5 on XL screens</div>
</div>

</body>
</html>

`.p-# / p-*-#`

Popis: polstrování na všech stranách

Zkus to

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Padding Utilities</h1>
  <div class="p-0 bg-warning">Padding 0</div>
  <div class="p-1 bg-success">Padding 1</div>
  <div class="p-2 bg-danger">Padding 2</div>
  <div class="p-3 bg-primary">Padding 3</div>
  <div class="p-4 bg-light">Padding 4</div>
  <div class="p-5 bg-info">Padding 5</div>
  <br>

  <p>Responsive padding utilities. Resize the browser window to see the effect:</p>
  <div class="p-sm-5 bg-warning">Padding 5 on SM screens</div>
  <div class="p-md-5 bg-success">Padding 5 on MD screens</div>
  <div class="p-lg-5 bg-danger">Padding 5 on LG screens</div>
  <div class="p-xl-5 bg-primary">Padding 5 on XL screens</div>
</div>

</body>
</html>

`.pt-# / pt-*-#`

Popis: polstrování nahoře

Zkus to

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Padding Top Utilities</h1>
  <div class="pt-0 bg-warning">Padding Top 0</div>
  <div class="pt-1 bg-success">Padding Top 1</div>
  <div class="pt-2 bg-danger">Padding Top 2</div>
  <div class="pt-3 bg-primary">Padding Top 3</div>
  <div class="pt-4 bg-light">Padding Top 4</div>
  <div class="pt-5 bg-info">Padding Top 5</div>
  <br>

  <p>Responsive padding top utilities. Resize the browser window to see the effect:</p>
  <div class="pt-sm-5 bg-warning">Padding Top 5 on SM screens</div>
  <div class="pt-md-5 bg-success">Padding Top 5 on MD screens</div>
  <div class="pt-lg-5 bg-danger">Padding Top 5 on LG screens</div>
  <div class="pt-xl-5 bg-primary">Padding Top 5 on XL screens</div>
</div>

</body>
</html>

`.pb-# / pb-*-#`

Popis: spodní výplň

Zkus to

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Padding Bottom Utilities</h1>
  <div class="pb-0 bg-warning">Padding Bottom 0</div>
  <div class="pb-1 bg-success">Padding Bottom 1</div>
  <div class="pb-2 bg-danger">Padding Bottom 2</div>
  <div class="pb-3 bg-primary">Padding Bottom 3</div>
  <div class="pb-4 bg-light">Padding Bottom 4</div>
  <div class="pb-5 bg-info">Padding Bottom 5</div>
  <br>

  <p>Responsive padding bottom utilities. Resize the browser window to see the effect:</p>
  <div class="pb-sm-5 bg-warning">Padding Bottom 5 on SM screens</div>
  <div class="pb-md-5 bg-success">Padding Bottom 5 on MD screens</div>
  <div class="pb-lg-5 bg-danger">Padding Bottom 5 on LG screens</div>
  <div class="pb-xl-5 bg-primary">Padding Bottom 5 on XL screens</div>
</div>

</body>
</html>

`.ps-# / ps-*-#`

Popis: odsazení vlevo

Zkus to

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Padding Left Utilities</h1>
  <div class="ps-0 bg-warning">Padding Left 0</div>
  <div class="ps-1 bg-success">Padding Left 1</div>
  <div class="psl-2 bg-danger">Padding Left 2</div>
  <div class="ps-3 bg-primary">Padding Left 3</div>
  <div class="ps-4 bg-light">Padding Left 4</div>
  <div class="ps-5 bg-info">Padding Left 5</div>
  <br>

  <p>Responsive padding left utilities. Resize the browser window to see the effect:</p>
  <div class="ps-sm-5 bg-warning">Padding Left 5 on SM screens</div>
  <div class="ps-md-5 bg-success">Padding Left 5 on MD screens</div>
  <div class="ps-lg-5 bg-danger">Padding Left 5 on LG screens</div>
  <div class="ps-xl-5 bg-primary">Padding Left 5 on XL screens</div>
</div>

</body>
</html>

`.pe-# / pe-*-#`

Popis: odsazení vpravo

Zkus to

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Padding Right Utilities</h1>
  <div class="pe-0 bg-warning text-end">Padding Right 0</div>
  <div class="pe-1 bg-success text-end">Padding Right 1</div>
  <div class="pe-2 bg-danger text-end">Padding Right 2</div>
  <div class="pe-3 bg-primary text-end">Padding Right 3</div>
  <div class="pe-4 bg-light text-end">Padding Right 4</div>
  <div class="pe-5 bg-info text-end">Padding Right 5</div>
  <br>

  <p>Responsive padding right utilities. Resize the browser window to see the effect:</p>
  <div class="pe-sm-5 bg-warning text-end">Padding Right 5 on SM screens</div>
  <div class="pe-md-5 bg-success text-end">Padding Right 5 on MD screens</div>
  <div class="pe-lg-5 bg-danger text-end">Padding Right 5 on LG screens</div>
  <div class="pe-xl-5 bg-primary text-end">Padding Right 5 on XL screens</div>
</div>

</body>
</html>

`.py-# / py-*-#`

Popis: odsazení nahoře a dole

Zkus to

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Padding Top and Bottom Utilities</h1>
  <p>Padding y utilities:</p>
  <div class="py-0 bg-warning">Padding Y 0</div>
  <div class="py-1 bg-success">Padding Y 1</div>
  <div class="py-2 bg-danger">Padding Y 2</div>
  <div class="py-3 bg-primary">Padding Y 3</div>
  <div class="py-4 bg-light">Padding Y 4</div>
  <div class="py-5 bg-info">Padding Y 5</div>
  <br>

  <p>Responsive padding y utilities. Resize the browser window to see the effect:</p>
  <div class="py-sm-5 bg-warning">Padding Y 5 on SM screens</div>
  <div class="py-md-5 bg-success">Padding Y 5 on MD screens</div>
  <div class="py-lg-5 bg-danger">Padding Y 5 on LG screens</div>
  <div class="py-xl-5 bg-primary">Padding Y 5 on XL screens</div>
</div>

</body>
</html>

`.px-# / px-*-#`

Popis: odsazení vlevo a vpravo

Zkus to

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Padding Left and Right Utilities</h1>
  <p>Padding x utilities:</p>
  <div class="px-0 bg-warning">Padding X 0</div>
  <div class="px-1 bg-success">Padding X 1</div>
  <div class="px-2 bg-danger">Padding X 2</div>
  <div class="px-3 bg-primary">Padding X 3</div>
  <div class="px-4 bg-light">Padding X 4</div>
  <div class="px-5 bg-info">Padding X 5</div>
  <br>

  <p>Responsive padding x utilities. Resize the browser window to see the effect:</p>
  <div class="px-sm-5 bg-warning">Padding X 5 on SM screens</div>
  <div class="px-md-5 bg-success">Padding X 5 on MD screens</div>
  <div class="px-lg-5 bg-danger">Padding X 5 on LG screens</div>
  <div class="px-xl-5 bg-primary">Padding X 5 on XL screens</div>
</div>

</body>
</html>

Stíny

K přidání stínů do prvku použijte třídy shadow-:

Příklad

No shadow

Small shadow

Default shadow

Large shadow

<div class="shadow-none p-4 mb-4 bg-light">No shadow</div>
<div class="shadow-sm p-4 mb-4 bg-white">Small shadow</div>
<div class="shadow p-4 mb-4 bg-white">Default shadow</div>
<div class="shadow-lg p-4 mb-4 bg-white">Large shadow</div>

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Shadows</h1>
  <p>Use the shadow- classes to to add shadows to an element:</p>
  <div class="shadow-none p-4 mb-4 bg-light">No shadow</div>
  <div class="shadow-sm p-4 mb-4 bg-white">Small shadow</div>
  <div class="shadow p-4 mb-4 bg-white">Default shadow</div>
  <div class="shadow-lg p-4 mb-4 bg-white">Large shadow</div>
</div>

</body>
</html>

Vertikální zarovnání

Pomocí tříd align- změňte zarovnání prvků (funguje pouze u prvků inline, inline-block, inline-table a table cell):

Příklad

baseline top middle bottom text-top text-bottom

<span class="align-baseline">baseline</span>
<span class="align-top">top</span>
<span class="align-middle">middle</span>
<span class="align-bottom">bottom</span>
<span class="align-text-top">text-top</span>
<span class="align-text-bottom">text-bottom</span>

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Vertical Align</h1>
  <p>Change the alignment of elements with the align classes (only works on inline, inline-block, inline-table and table cell elements):</p>
  <span class="align-baseline">baseline</span>
  <span class="align-top">top</span>
  <span class="align-middle">middle</span>
  <span class="align-bottom">bottom</span>
  <span class="align-text-top">text-top</span>
  <span class="align-text-bottom">text-bottom</span>
</div>

</body>
</html>

Poměr stran

Vytvořte responzivní video nebo prezentace na základě šířky nadřazeného prvku.

Přidejte třídu .ratio spolu s poměrem stran dle vašeho výběru .ratio-* do nadřazeného prvku, a přidejte do něj vložení (video nebo iframe):

Příklad

<!-- Aspect ratio 1:1 -->
<div class="ratio ratio-1x1">
  <iframe src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe>
</div>
<!-- Aspect ratio 4:3 -->
<div class="ratio ratio-4x3">
  <iframe src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe>
</div>
<!-- Aspect ratio 16:9 -->
<div class="ratio ratio-16x9">
  <iframe src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe>
</div>
<!-- Aspect ratio 21:9 -->
<div class="ratio ratio-21x9">
  <iframe src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe>
</div>

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Aspect Ratio</h2>
  <p>Create a responsive video and scale it nicely to the parent element.</p>
  
  <h2>Aspect ratio 1:1</h2>
  <div class="ratio ratio-1x1">
    <iframe src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe>
  </div>
  <br>
  
  <h2>Aspect ratio 4:3</h2>
  <div class="ratio ratio-4x3">
    <iframe src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe>
  </div> 
  <br>
  
  <h2>Aspect ratio 16:9</h2>
  <div class="ratio ratio-16x9">
    <iframe src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe>
  </div>
  <br>
    
  <h2>Aspect ratio 21:9</h2>
  <div class="ratio ratio-21x9">
    <iframe src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe>
  </div>
</div>

</body>
</html>

Viditelnost

K ovládání viditelnosti prvků použijte třídy .visible nebo .invisible. Poznámka: Tyto třídy nemění zobrazovanou hodnotu CSS. Přidávají pouze visibility:visible nebo visibility:hidden:

Příklad

I am visible

I am invisible

     <div class="visible">I am visible</div>
<div class="invisible">I am 
      invisible</div>

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Visibility</h1>
  <p>Use the .visible or .invisible classes to control the visibility of elements. Note: These classes do not change the CSS display value. They only add visibility:visible or visibility:hidden to an element:</p>
  <div class="visible bg-success">I am visible</div>
  <div class="invisible bg-warning">I am invisible</div>
</div>

</body>
</html>

Zavřít ikonu

Ke stylování ikony zavření použijte třídu .btn-close. To se často používá pro výstrahy a způsoby.

Příklad

     <button type="button" class="btn-close"></button>

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h1>Close Icon</h1>
  <p>Use the .close class to style a close icon. This is often used for alerts and modals. Note that we use the times; symbol to create the actual icon (a better looking "x"). Also note that it is right-aligned by default:</p>
  <div class="clearfix">
    <button type="button" class="close">&amp;times;</button>
  </div>
</div>

</body>
</html>

Čtečky obrazovky

Pomocí třídy .visually-hidden skryjte prvek na všech zařízeních kromě čteček obrazovky:

Příklad

<span class="visually-hidden">I will be hidden on all screens except for screen   readers.</span>

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Screen readers</h2>
  <p>Use the .sr-only class to hide an element on all devices, except screen readers:</p>
  <span class="visually-hidden">I will be hidden on all screens except for screen readers.</span>
</div>

</body>
</html>

Barvy

Jak je popsáno v kapitole Barvy, zde je seznam všech tříd barev textu a pozadí:

Třídy pro barvy textu jsou:

.text-muted
.text-primary
.text-success
.text-info
.text-warning
.text-danger
.text-secondary
.text-white
.text-dark
.text-body
.text-light

.text-body je výchozí barvou těla (často černá).

Příklad

This text is muted.

This text is important.

This text indicates success.

This text represents some information.

This text represents a warning.

This text represents danger.

Secondary text.

Dark grey text.

Body text.

Light grey text.

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Contextual Colors</h2>
  <p>Use the contextual classes to provide &quot;meaning through colors&quot;:</p>
  <p class="text-muted">This text is muted.</p>
  <p class="text-primary">This text is important.</p>
  <p class="text-success">This text indicates success.</p>
  <p class="text-info">This text represents some information.</p>
  <p class="text-warning">This text represents a warning.</p>
  <p class="text-danger">This text represents danger.</p>
  <p class="text-secondary">Secondary text.</p>
  <p class="text-dark">This text is dark grey.</p>
  <p class="text-body">Default body color (often black).</p>
  <p class="text-light">This text is light grey (on white background).</p>
  <p class="text-white">This text is white (on white background).</p>
</div>

</body>
</html>

Třídy kontextového textu lze také použít na odkazy:

Příklad

Muted link. Primary link. Success link. Info link. Warning link. Danger link. Secondary link. Dark grey link. Body/black link. Light grey link.

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Contextual Link Colors</h2>
  <a href="#" class="text-muted">Muted link.</a>
  <a href="#" class="text-primary">Primary link.</a>
  <a href="#" class="text-success">Success link.</a>
  <a href="#" class="text-info">Info link.</a>
  <a href="#" class="text-warning">Warning link.</a>
  <a href="#" class="text-danger">Danger link.</a>
  <a href="#" class="text-secondary">Secondary link.</a>
  <a href="#" class="text-dark">Dark grey link.</a>
  <a href="#" class="text-body">Body/black link.</a>
  <a href="#" class="text-light">Light grey link.</a>
</div>

</body>
</html>

Můžete také přidat 50% neprůhlednost pro černý nebo bílý text pomocí .text-black-50 nebo .text-white- 50 tříd:

Příklad

Black text with 50% opacity on white background

White text with 50% opacity on black background

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Opacity Text Colors</h2>
  <p>Add 50% opacity for black or white text with the .text-black-50 or .text-white-50 classes:</p>
  <p class="text-black-50">Black text with 50% opacity on white background</p>
  <p class="text-white-50 bg-dark">White text with 50% opacity on black background</p>
</div>

</body>
</html>

Barvy pozadí

Třídy pro barvy pozadí jsou:

bg-primary
.bg-success
.bg-info
.bg-warning
.bg-danger
.bg-secondary
.bg-dark
.bg-light

Příklad

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Contextual Backgrounds</h2>
  <p>Use the contextual background classes to provide &quot;meaning through colors&quot;.</p>
  <div class="bg-primary p-3"></div>
  <div class="bg-success p-3"></div>
  <div class="bg-info p-3"></div>
  <div class="bg-warning p-3"></div>
  <div class="bg-danger p-3"></div>
  <div class="bg-secondary p-3"></div>
  <div class="bg-dark p-3"></div>
  <div class="bg-light p-3"></div>
</div>

</body>
</html>

Výše uvedené třídy .bg-color nefungují dobře s textem, nebo alespoň musíte zadat správný .text-color pro získání správné barvy textu pro každé pozadí.

Můžete však použít třídy .text-bg-color a Bootstrap automaticky zpracuje příslušnou barvu textu pro každou barvu pozadí:

Příklad

This text is important.

This text indicates success.

This text represents some information.

This text represents a warning.

This text represents danger.

Secondary background color.

Dark grey background color.

Light grey background color.

Zkuste to sami →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Background Color with Contrasting Text Color</h2>
  <p class="text-bg-primary">This text is important.</p>
  <p class="text-bg-success">This text indicates success.</p>
  <p class="text-bg-info">This text represents some information.</p>
  <p class="text-bg-warning">This text represents a warning.</p>
  <p class="text-bg-danger">This text represents danger.</p>
  <p class="text-bg-secondary">Secondary background color.</p>
  <p class="text-bg-dark">Dark grey background color.</p>
  <p class="text-bg-light">Light grey background color.</p>
</div>

</body>
</html>