Třídy pro barvy pozadí jsou:
.bg-primary
.bg-success
.bg-info
.bg-warning
.bg-danger
.bg-secondary
.bg-dark
.bg-lightZkuste 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 "meaning through colors".</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 správnou třídu .text-color, abyste získali správnou barvu textu pro každý Pozadí.
Můžete však použít .text-bg-color třídy a Bootstrap automaticky zpracuje příslušné barva textu pro každou barvu pozadí:
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>