<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>课堂学习</title>
</head>
<body>
<fieldset>
<legend>注册表单（必填）</legend>
<form method="#">
<p>
<label for="r_name">账号：</label>
<input type="text" id="r_name" placeholder="请输入手机号或者邮箱" required/><span class="span_1" onfocus="oniput(this,1)"></span>
</p>
<p>
<label for="r_password">密码：</label>
<input type="password" id="r_password" placeholder="请输入密码" required/><span class="span_3"></span>
</p>
<p>
<label for="r_repassword">确认密码：</label>
<input type="password" id="r_repassword" placeholder="确认密码" required/><span class="span_4"></span>
</p>
<p id="sex_p">
选择性别：<label for="man">男</label>
<input type="radio" id="man" name="sex"/>
<label for="woman">女</label>
<input type="radio" id="woman" name="sex"/>
</p>
<p id="botton">
<input type="submit" value="提交"/>
<input type="reset" />
</p>
</form>
</fieldset>
</body>
</html>