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Bootstrap 4 .flex-*-fill类的实现

2024-05-10 00:05:06 373

使用flex-*-fill类将flex项目设置为在不同屏幕上具有相等的宽度，如下面的代码片段所示-

对于 小宽度的屏幕

<div class="d-flex mb-3 bg-primary">
  <div class="p-2 flex-sm-fill bg-info">A</div>
  <div class="p-2 flex-sm-fill bg-warning">B</div>
  <div class="p-2 flex-sm-fill bg-primary">C</div>
</div>

对于中等宽度的屏幕

<div class="d-flex mb-3 bg-primary">
  <div class="p-2 flex-md-fill bg-info">A</div>
  <div class="p-2 flex-md-fill bg-warning">B</div>
  <div class="p-2 flex-md-fill bg-primary">C</div>
</div>

以下是实现flex-*fill类的示例-

枫树

<!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">
    <h3>Flex (Small Width)</h3>
    <div class="d-flex mb-3 bg-primary">
      <div class="p-2 flex-sm-fill bg-info">A</div>
      <div class="p-2 flex-sm-fill bg-warning">B</div>
      <div class="p-2 flex-sm-fill bg-primary">C</div>
    </div>
    <h3>Flex (Medium Width)</h3>
    <div class="d-flex mb-3 bg-primary">
      <div class="p-2 flex-md-fill bg-info">A</div>
      <div class="p-2 flex-md-fill bg-warning">B</div>
      <div class="p-2 flex-md-fill bg-primary">C</div>
    </div>
    <h3>Flex (Large Width)</h3>
    <div class="d-flex mb-3 bg-primary">
      <div class="p-2 flex-lg-fill bg-info">A</div>
      <div class="p-2 flex-lg-fill bg-warning">B</div>
      <div class="p-2 flex-lg-fill bg-primary">C</div>
    </div>
  </div>

</body>
</html>

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Bootstrap 4 .flex-*-fill类的实现

枫树

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