http://cdn.bootcss.com/bootstrap/3.3.0/css/bootstrap.min.css
http://cdn.bootcss.com/jquery/1.11.1/jquery.min.js
http://cdn.bootcss.com/bootstrap/3.3.0/js/bootstrap.min.js
<link rel="stylesheet" href="http://cdn.bootcss.com/bootstrap/3.3.0/css/bootstrap.min.css">
<script src = "http://cdn.bootcss.com/jquery/1.11.1/jquery.min.js"></script>
<script src = "http://cdn.bootcss.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
只有不断学习才能进步!