css行内样式
<html>
<head>
<title>测试css行内样式</title>
</head>
<body>
<div id="test" style="height:300;width:300;background-color:#35f">行内样式<div>
</body>
</html>
css内部样式
<html>
<head>
<title>测试css内部样式</title>
<style type="text/css">
#test{
height:300px;
width:500px;
/*background-color:789FFF;*/
background-image:url(picture/p2.jpg);
font-size:30px;
text-align:center;
line-height:50px;
}
</style>
</head>
<body>
<div id="test">内部样式<div>
</body>
</html>
css外部样式