一、基础表单
<form >
<div class=form-group>
<label>邮箱:</label>
<input type=email class=form-control placeholder=请输入您的邮箱地址>
</div>
<div class=form-group>
<label>密码</label>
<input type=password class=form-control placeholder=请输入您的邮箱密码>
</div>
<div class=checkbox>
<label>
<in