任务如图:
<html><head><meta charest="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head><body><table width="300px" border="1"><tr bgcolor="grey"><td align="center">用户注册</td></tr></table><table width="300px" border="1"><tr><td width="100px" align="right">用户名</td><td align="left"><input type="text" placeholder="请输入姓名" name="username"></td></tr><tr><td align="right">密码</td><td align="left"><input type="password" name="password"></td></tr><tr><td align="right">性别</td><td align="left"><input type="radio" name="sex" value="nan">男<input type="radio" name="sex" value="nv">女</td></tr><tr><td align="right">爱好</td><td align="left"><input type="checkbox" name="hobby">写作<input type="checkbox" name="hobby">听音乐<input type="checkbox" name="hobby">体育</td></tr><tr><td align="right">省份</td><td align="left"><select name="city"><option value="北京" selected>北京</option><option value="上海">上海</option><option value="广州">广州</option><option value="深圳">深圳</option></select></td></tr><tr><td align="right">自我介绍</td><td align="left"><textarea name="ziwojieshao"cols="30" rows="5" placeholder="请介绍一下你自己"></textarea></td></tr></table><table weidth="600px" border="1"><tr bgcolor="grey"><td><button>提交</button></td><td><input type="reset"></td></tr></table></body></html>