XSmall | Small | Medium | Large | Extra Large | XXL | |
---|---|---|---|---|---|---|
Class prefix | .col- |
.col-sm- |
.col-md- |
.col-lg- |
.col-xl- |
.col-xxl- |
Screen width | <576px | >=576px | >=768px | >=992px | >=1200px | >=1400px |
在上一章中,我们介绍了一个包含中小型设备类的网格示例。我们使用了两个 div(列),并在小型设备上将其分配为 25%/75%,在中型设备上将其分配为 50%/50%:
<div class="col-sm-3 col-md-6">....</div>
<div class="col-sm-9 col-md-6">....</div>
但在大型设备上,33%/66% 分割的设计可能会更好。
大型设备的定义是屏幕宽度为992 像素到1199 像素。
对于大型设备,我们将使用 .col-lg-*
类:
<div class="col-sm-3 col-md-6 col-lg-4">....</div>
<div class="col-sm-9 col-md-6 col-lg-8">....</div>
现在 Bootstrap 会说“在小尺寸下,查看带有 -sm- 的类并使用它们。在中等尺寸下,查看带有 -md- 的类” > 在它们中并使用它们。在大尺寸下,查看其中包含单词 -lg- 的类并使用它们。
以下示例将导致在小型设备上进行 25%/75% 的拆分,在中型设备上进行 50%/50% 的拆分,以及在大型、xlarge 和 xxlarge 设备上进行 33%/66% 的拆分。在超小型设备上,它将自动堆叠(100%):
<div class="container-fluid">
<div class="row">
<div class="col-sm-3 col-md-6 col-lg-4">
<p>Lorem ipsum...</p>
</div>
<div class="col-sm-9 col-md-6 col-lg-8">
<p>Sed ut perspiciatis...</p>
</div>
</div>
</div>
自己尝试一下→
<!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-fluid mt-3">
<h1>Large Grid</h1>
<p>The following example will result in a 25%/75% split on small devices, a 50%/50% split on medium devices, and a 33%/66% split on large, xlarge and xxlarge devices. On extra small devices, it will automatically stack (100%).</p>
<p>Resize the browser window to see the effect.</p>
<div class="container-fluid">
<div class="row">
<div class="col-sm-3 col-md-6 col-lg-4 bg-primary text-white">
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
</div>
<div class="col-sm-9 col-md-6 col-lg-8 bg-dark text-white">
Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo.
</div>
</div>
</div>
</div>
</body>
</html>
注意:确保总和等于或小于 12(不需要使用所有 12 个可用列):
在下面的示例中,我们仅指定 .col-lg-6
类(没有 .col-md-*
和/或 .col-sm-*
)。这意味着大型、xlarge 和 xxlarge 设备将分成 50%/50%。但是,对于中型、小型和超小型设备,它将垂直堆叠(100% 宽度):
<div class="container-fluid">
<div class="row">
<div class="col-lg-6">
<p>Lorem ipsum...</p>
</div>
<div class="col-lg-6">
<p>Sed ut perspiciatis...</p>
</div>
</div>
</div>
自己尝试一下→
<!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-fluid mt-3">
<h1>Large Grid</h1>
<p>The following example will result in a 50%/50% split on large, xlarge and xxlarge devices (<strong>992px and above</strong>). On medium, small and extra small devices, it will automatically stack (100%).</p>
<p>Resize the browser window to see the effect.</p>
<div class="container-fluid">
<div class="row">
<div class="col-lg-6 bg-primary text-white">
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.<br>
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
</div>
<div class="col-lg-6 bg-dark text-white">
Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo.
</div>
</div>
</div>
</div>
</body>
</html>
在 Bootstrap 5 中,有一种简单的方法可以为所有设备创建等宽的列:只需从 .col-lg-*
中删除数字并仅使用 col 元素 上的 ="w3-codespan">.col-lg
类。 Bootstrap 将识别有多少列,并且每列将获得相同的宽度。
如果屏幕尺寸小于 992px,列将水平堆叠:
<!-- Two columns: 50% width on large and up-->
<div class="row">
<div class="col-lg">1 of 2</div>
<div class="col-lg">2 of 2</div>
</div>
<!-- Four columns: 25% width on large and up -->
<div class="row">
<div class="col-lg">1 of 4</div>
<div class="col-lg">2 of 4</div>
<div class="col-lg">3 of 4</div>
<div class="col-lg">4 of 4</div>
</div>
自己尝试一下 →
<!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-fluid mt-3">
<h1>Responsive Auto Layout Columns</h1>
<p>In Bootstrap 5, there is an easy way to create equal width columns: just use the <code>.col-lg</code> class on a specified number of col elements. Bootstrap will recognize how many columns there are, and each column will get the same width.</p>
<p>If the screen size is <strong>less than 992px</strong>, the columns will stack horizontally.</p>
<div class="container-fluid">
<div class="row">
<div class="col-lg bg-primary text-white">1 of 2</div>
<div class="col-lg bg-dark text-white">2 of 2</div>
</div>
</div>
<br>
<div class="container-fluid">
<div class="row">
<div class="col-lg bg-primary text-white">1 of 4</div>
<div class="col-lg bg-dark text-white">2 of 4</div>
<div class="col-lg bg-primary text-white">3 of 4</div>
<div class="col-lg bg-dark text-white">4 of 4</div>
</div>
</div>
</div>
</body>
</html>