<html>
<head>
<title>表单</title>
<style> :invalid {background-color: #CC0000; }</style>
</head>
<body>
<form>
<fieldset style="width:550;height:240">
<legend>发表评论</legend>
<table>
<tr>
<td>昵称:<input required type="text" name="Nickname" id="Nickname" /></td>
<td align="left">E-mail:<input required type="text" name="CommentEmail" id="CommentEmail" /></td>
</tr>
<tr>
<td colspan="2"><textarea name="Comments" id="Comments" cols="70" rows="10">在此写下您对本文章的评论</textarea></td>
</tr>
<tr>
<td><input type="submit" value="提交" /><input type="reset" /> </td>
</tr>
</table>
</fieldset>
</form>
</body>
</html>
运行结果: