第九周 

<html>
	<head>
		<meta charset="UTF-8">
		<title>选择器</title>
		<style type="text/css">
			tr:nth-child(odd ){
				background-color: red;
			}
			tr:nth-child(even){
				background-color: wheat;
			}
		</style>
	</head>
	<body>
		<table border="" cellpadding=""cellpadding="">
			<tr><th>2</th><th>2</th></tr>
			<tr><td>5</td></tr>
		</table>
	</body>
</html>
posted @ 2026-05-20 08:10  qwerzxcv--  阅读(19)  评论(0)    收藏  举报