<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>Bootstrap 实例 - 清除浮动</title>
        <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css">  
        <script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
        <script src="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
    </head>
    <body>

        <div class="clearfix"  style="background: #D8D8D8;border: 1px solid #000;padding: 10px;">
            <div class="pull-left" style="background:#58D3F7;">
                向左快速浮动
            </div>
            <div class="pull-right" style="background: #DA81F5;">
                向右快速浮动
            </div>
        </div>

    </body>
</html>