CSS ?? ???? ????
CSS ????
?? ??? ??? ????
??? ???> ID ???> ??? ???>?? ???
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>php.cn</title>
<style type="text/css">
h1{
color:green;
}
.hclass{
color:bule;
}
#hid{
color:black;
}
</style>
</head>
<body>
<div>
<h1 class="hclass" id="hid" style="color:red">習(xí)近平心中的互聯(lián)網(wǎng)</h1>
</div>
</body>
</html>??? ?? ??:
?? ???? ????
- ????? 1? ?? ???
- ??? ??? ???? 10
- ID ??? ????? 100
- ??? ??? ????? 1000
?? ????? ?????
.news h1{color:red;} ????: 10 + 1 = 11.title{color:blue;} ????: 10div.news h1{color:red;} ????: 1 + 10 + 1 = 12h1.title{color:blue;} ????: 1 + 10 = 11
