??? ???
ID ???? ?? ? ???:
?? ?? 1:
#myid{ Rules }
? ?? ????? ID? ??? ? ????. myid? ?????.
?? ?? 2:
E#myid{ sRules }
? ?? ??? ID? myid? E ??? ??? ? ????.
?? ??:
<!DOCTYPE html>
<html>
<head>
<meta charset=" utf-8">
<meta name="author" content="http://ask.php.cn/" />
<title>php中文網(wǎng)</title>
<style type="text/css">
#mytest{
color:blue;
}
</style>
</head>
<body>
<div>
<ul>
<li id="mytest">php中文網(wǎng)歡迎您</li>
<li>php中文網(wǎng)</li>
</ul>
<p id="mytest">php中文網(wǎng)歡迎您</p>
</div>
</body>
</html>? ??? ID? mytest? ??? ??? ??? ????? ??? ? ????.
?? ?? ??: id? ?? html ???? ???? ??? ?? ???? ??? id? ?? ? ??? ??? ??? ??? ??? ??? ????? ?? ????? ? ??? ?.
<!DOCTYPE html>
<html>
<head>
<meta charset=" utf-8">
<meta name="author" content="http://ask.php.cn/" />
<title>php中文網(wǎng)</title>
<style type="text/css">
li#mytest{
color:blue;
}
</style>
</head>
<body>
<div>
<ul>
<li id="mytest">php中文網(wǎng)歡迎您</li>
<li>php中文網(wǎng)</li>
</ul>
<p>php中文網(wǎng)歡迎您</p>
</div>
</body>
</html>??? ID? mytest? li ??? ??? ??? ????? ??? ? ????.
