老师授课-1-框内数字

 

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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style>
.aa
{
    border:1px solid red;
    width:100px;
    height:40px;
    background-color:#0F9;}
.bb
{
    width:100px; height:40px; background-color:#0F3; border:5px double blue;}

</style>
</head>

<body>
<div class="aa" onmouseover="this.className='bb'" onmouseout="this.className='aa'">123456</div>

</body>
</html>

 

无标题文档

123456
posted @ 2016-05-25 19:26  右掱写爱  阅读(82)  评论(0)  编辑  收藏  举报