Bootstrap 5 两列Responsive Layout

在新的空白选项卡中打开输出(单击“显示输出”按钮旁边的箭头)并调整浏览器窗口的大小以了解 Bootstrap 响应式网格系统的工作原理。

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Bootstrap Two Column Grid Layouts for Tablets and Desktops</title>
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js"></script>
  <style>
    /* Some custom styles to beautify this example */
    .demo-content{
      padding: 15px;
      font-size: 18px;
      background: #dbdfe5;
      margin-bottom: 15px;
    }
    .demo-content.bg-alt{
      background: #abb1b8;
    }
  </style>
</head>
<body>
<h2 class="text-center mt-3">Bootstrap Responsive Layout</h2>
<div class="text-center my-3">Open the output in a new blank tab (Click the arrow next to "Show Output" button) and resize the browser window to understand how the Bootstrap responsive grid system works.</div>
<div class="container">
  <!--Row with two equal columns-->
  <div class="row">
    <div class="col-md-6">
      <div class="demo-content">.col-md-6</div>
    </div>
    <div class="col-md-6">
      <div class="demo-content bg-alt">.col-md-6</div>
    </div>
  </div>

  <!--Row with two columns divided in 1:2 ratio-->
  <div class="row">
    <div class="col-md-4">
      <div class="demo-content">.col-md-4</div>
    </div>
    <div class="col-md-8">
      <div class="demo-content bg-alt">.col-md-8</div>
    </div>
  </div>

  <!--Row with two columns divided in 1:3 ratio-->
  <div class="row">
    <div class="col-md-3">
      <div class="demo-content">.col-md-3</div>
    </div>
    <div class="col-md-9">
      <div class="demo-content bg-alt">.col-md-9</div>
    </div>
  </div>
</div>
</body>
</html>

效果如下:

两列布局