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源代码：
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<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Bootstrap 版本 2.0 默认表单布局实例</title> <meta content="Bootstrap Version2.0 default form layout example from w3cschool.cc." name="description"> <link href="/try/bootstrap/twitter-bootstrap-v2/docs/assets/css/bootstrap.css" rel="stylesheet"> </head> <body> <form class="well"> <label>标签名称</label> <input class="span3" placeholder="Type something…" type="text"> <span class="help-inline">相关帮助文档 ！</span> <label class="checkbox"> <input type="checkbox"> 选中我 </label> <button class="btn" type="submit">提交</button> </form> </body> </html>
运行结果