<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0,maximum=1.0,minimum=1.0,user-scalable=0" />
<link type="text/css" rel="stylesheet" href="//repo.bfw.wiki/bfwrepo/css/bootstrap.4.3.1.min.css">
</head>
<body>
<div class="container">
<div class="row">
<div class="col-12 col-md">列1111111111111111111111</div>
<div class="col-12 col-md">列2</div>
<!-- 可以继续添加任意数量的列 -->
<div class="col-12 col-md">列n</div>
</div>
</div>
</body>
</html>
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