在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>菜鸟教程(cainiaoplay.com)</title>
<style>html {height:100%;}
body {height:100%;}
img.normal {height:auto;}
img.big {height:50%;}
img.small {height:10%;}
</style>
</head>

<body>
<img class="normal" src="logocss.gif.html" width="95" height="84" /><br>
<img class="big" src="logocss.gif.html" width="95" height="84" /><br>
<img class="small" src="logocss.gif.html" width="95" height="84" />
</body>
</html>

源代码

动行结果