Bootstrap 4 .flex-*-fill 类的实现
使用 flex-*-fill 类来设定 flex 项目在不同屏幕上具有相等的宽度,如下面代码片段所示 −
对于小屏幕宽度
<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>
对于中等屏幕宽度
<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 −
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://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> </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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