Bootstrap 4 .border-white 类


如需为某个元素设置白色边框,请使用 border-white 类。

添加白色边框 −

<div class="mystyle border border-white">
  This has white border
</div>

上面,我也添加了一个样式来设置 div 元素 −

.mystyle {
  width: 200px;
  height: 100px;
  margin: 10px;
  background: blue;
}

让我们看一个示例以在 Bootstrap 中实现 border-white 类 −

示例

实时演示

<!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://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
    <style>
    .mystyle {
      width: 200px;
      height: 100px;
      margin: 10px;
      background: blue;
    }
    </style>
  </head>
<body>

<div class="container">
  <p>The following are two Rectangles:</p>
  <div class="mystyle border border-white">This has white border</div>
  <div class="mystyle border border-success">This has orange border</div>
</div>

</body>
</html>

更新于:17-Jun-2020

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