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纯css实现鼠标滑过弹出层效果

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代码如下:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://.w3./TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://.w3./1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css" >
{marg:0; paddg:0;} / 所有元素外边距为0 内边距为0 /
/ body中元素字体大小为12px,字体样式为:"Times New Roman", Times, serif,背景色:#333 /
body{font-size:12px; font-family:"Times New Roman", Times, serif; background-color:#333;}
/ id为ma的元素上下外边距为100px,左右外边距为自动;宽度为300px /
#ma{marg:100px auto; width:300px;}
/ id为ma的元素中无序列表列表样式为隐藏 /
#ma ul{list-style:none;}
/ id为ma的元素中的无序列表下的li块 行高为20px, 下边框的样式为1px dashed #FC0 /
#ma ul li{le-height:20px; border-bottom:1px dashed #FC0;}
/ id为ma的元素中的无序列表下的li块 中的a标签 颜色为#E7E7E7;关闭文本修饰;相对定位;元素当做块元素显示,前后会有换行符/
#ma ul li a{color:#E7E7E7; text-decoration:none; position:relative; display:block;}
/ id为ma的元素中的无序列表下的li块 中的a标签 下的div元素 隐藏 /
<span style="color:#FF0000"> #ma ul li a div{display:none;}
#ma ul li a:hover{color:#FFF;}
#ma ul li a:hover div{position:absolute; left:280px; :-40px; background-color:#FFF; display:block; width:300px; height:100px; color:#000; overflow:hidden;}
#ma ul li a:hover div dt{float:left; width:8px; background:url(234.gif) center no-repeat;height:100px; display:block; background-color:#333;}
#ma ul li a:hover div dd{float:right ; width:270px; height:auto; le-height:18px; paddg:6px 10px;}</span>
</style>
</head>
<body>
<p>
</p>
<p>
</p>
<div id="ma">
<ul>
<li><a href="javascript:void(0);">Customizg Form Objects and Validatg Forms
<div><dt></dt>
<dd>Rollovers are very easy usg Dreamweaver. All you need to do is export two images from Fireworks (the image itself and the rollover image). Next, Dreamweaver, click on Insert>Rollover Image. Give a name to the image, choose the images from the folder icon and fally give the lk to the image. That's it! You've now got a great lookg effect for your site.
</dd>
</div>
</a>
</li>
<li>
<a href="javascript:void(0);">Best Time Savg Tips Dreamweaver
<div><dt></dt>
<dd>Before uploadg your site you need to make sure that there are no dead lks the site. You can do this by gog to your site map, right clickg on any of the files and then clickg on 'check lks'. Now you can choose to either check lks the entire site or with the selected file or folder. If there are any dead lks you can fix them by usg the folder icon to select the right files.
</dd>
</div>
</a>
</li>
<li>
<a href="javascript:void(0);">Customizg Form Objects and Validatg Forms
<div><dt></dt>
<dd>After resizg an image Dreamweaver, click on Commands>Optimize Image Fireworks. You will get a dialog box sayg 'Editg image.gif. Do you wish to use an existg Fireworks document as the source of image.gif.' Click on No and then click Update. The image is now updated and optimized Dreamweaver. This saves you the trouble of openg the image Fireworks, resizg it and exportg it aga.
</dd>
</div>
</a>
</li>
<li>
<a href="javascript:void(0);">Dreamweaver Tips & Tutorials
<div><dt></dt>
<dd>We've shared some really cool tips on Macromedia Dreamweaver this article. They are handy tips that all Dreamweaver users should know about to allow more flexibility and creativity while designg sites Dreamweaver.
</dd>
</div>
</a>
</li>
<li>
<a href="javascript:void(0);">Jump Menus, Pop Up Wdows and Swap Images
<div><dt></dt>
<dd>Rollovers are very easy usg Dreamweaver. All you need to do is export two images from Fireworks (the image itself and the rollover image). Next, Dreamweaver, click on Insert>Rollover Image.
</dd>
</div>
</a>
</li>
</ul>
</div>
</body>
</html>
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