<body>
<div class="container-fluid"> //container-fluid:全屏
<form action="#" method="post"></form> //method:提交方法；action：提交之后跳转的页面
<fieldset> //组合表单中的相关元素
<legend>用户登陆</legend> //legend 元素为 fieldset 元素定义标题
<div class="form-group">
<label>用户名：</label>
<input type="text" class="form-control" name="name" placeholder="输入用户名"/>
</div>
<div class="form-group">
<label>密码：</label>
<input type="password" class="form-control" name="pwd"/>
</div>
<div class="form-group">
<label><input type="checkbox"/>记住密码</label>
</div>
<div >
<button type="submit" class="btn btn-default" >登陆</button>
</div>
<button type="submit"class="btn btn-default"></button>
</fieldset>
</div>
<div class="container">
<form action="#" method="post" class="form-inline">
<fieldset>
<legend>用户登陆</legend>
<div class="form-group">
<label class="sr-only">用户名：</label>
<input type="text" class="form-control" name="name" placeholder="输入用户名"/>
</div>
<div class="form-group">
<label>密码：</label>
<input type="password" class="form-control" name="pwd"/>
</div>
<div class="form-group">
<label><input type="checkbox"/>记住密码</label>
</div>
<div >
<button type="submit" class="btn btn-default" >登陆</button>
</div>
<button type="submit"class="btn btn-default"></button>
</fieldset>
</div>
<hr />
<div class="container has-success">
<form action="" method="post" class="form-horizontal" role="from">
<div class="from-group">
<label class="col-xs-2 control-label">用户名：</label>
<input class="col-xs-2" type="text" />
</div>
<div class="from-group">
<label class="col-xs-2 control-label">密 码：</label>
<input class="col-xs-2"word" />
</div><hr />
<label>爱好：</label>
<select name="ss" class="form-control" >
<option value="1">羽毛球</option>
<option value="1">篮球</option>
<option value="1">乒乓球</option>
<option value="1">足球</option>
<option value="1">网球</option>
</select>
<hr />
<br />
<div class="form-group has-feedback">
<label>用户名：</label>
<input type="tel" autofocus disabled placeholder="输入姓名" class="form-control" name="name"/>
<span class="glyphicon glyphicon-user form-control-feedback" aria-hidden="true"></span> //引入组件
</div>
</form>
</div>
</body>