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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>本教程(w3big.com)</title> <link rel="stylesheet" href="http://cdn.static.w3big.com/libs/bootstrap/3.3.7/css/bootstrap.min.css"> <script src="http://cdn.static.w3big.com/libs/jquery/2.1.1/jquery.min.js"></script> <script src="http://cdn.static.w3big.com/libs/bootstrap/3.3.7/js/bootstrap.min.js"></script> </head> <body> <div class="container"> <h2>文本</h2> <p class="text-warning">该段落使用了样式 "text-warning"。</p> <a class="text-warning" href="http://www.w3cschool.cc">链接使用了样式 "text-warning"。</a> </div> </body> </html>