在Bootstrap中的不同屏幕尺寸上对齐弹性项目

要在不同的屏幕尺寸上对齐弹性项目，请使用justify-content-*-around类。

您可以实现以下结果，证明中小屏幕尺寸的内容合理-

在Bootstrap中实现justify-content-*-around类-

示例

<!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 rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css">
    <script src="https://cdn.staticfile.org/jquery/3.3.1/jquery.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
  </head>

<body>

  <div class="container mt-3">
    <p>Default</p>
    <div class="d-flex justify-content-around bg-warning mb-5">
      <div class="p-2 bg-danger">ANS 1</div>
      <div class="p-2 bg-info">ANS 2</div>
      <div class="p-2 bg-secondary">ANS 3</div>
    </div>
    <p>Small Screen Size</p>
    <div class="d-flex justify-content-sm-around bg-warning mb-5">
      <div class="p-2 bg-danger">ANS 1</div>
      <div class="p-2 bg-info">ANS 2</div>
      <div class="p-2 bg-secondary">ANS 3</div>
    </div>
    <p>Medium Screen Size</p>
    <div class="d-flex justify-content-md-around bg-warning mb-5">
      <div class="p-2 bg-danger">ANS 1</div>
      <div class="p-2 bg-info">ANS 2</div>
      <div class="p-2 bg-secondary">ANS 3</div>
    </div>
    <p>Large Screen Size</p>
    <div class="d-flex justify-content-lg-around bg-warning mb-5">
      <div class="p-2 bg-danger">ANS 1</div>
      <div class="p-2 bg-info">ANS 2</div>
      <div class="p-2 bg-secondary">ANS 3</div>
    </div>
  </div>

</body>
</html>

基础教程