漂亮的透明css菜单下拉效果

漂亮的透明css菜单下拉效果

css 并不总是意味着严谨、标准。这理有趣味、实验性的css技术运用实例与演示其中讨论的一些技术与实例也许并没有被测试过，可能有些浏览器无法渲染，有些允许是被确认过的给予标准设计与开发的。

下面这个效果展示了如何设计一个高级的支持透明效果的css下拉菜单（需要javascript 来支持ie6png图透明问题)

实例：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>漂亮的透明css菜单</title> <style type="text/css"> #wrapper {750px; margin:0 auto;} #background {750px; height:440px; background:url(http://www.stunicholls.myby.co.uk/pro_drop12/model3.jpg); padding-top:10px;} #menu2 {padding:0; 750px; margin:0; list-style:none; height:28px; position:relative; z-index:500; font-family:arial, verdana, sans-serif; background:#000; border-bottom:1px solid #edb;} #menu2 li.top {display:block; float:left;} #menu2 li a.top_link {display:block; height:25px; float:left; line-height:22px; font-size:11px; font-weight:bold; padding:0 20px 0 10px; color:#edb; text-decoration:none; border-top:3px solid #000;} #menu2 li a.top_link:hover {color:#d85; border-color:#a52;} #menu2 li:hover > a.top_link {color:#d85; border-color:#a52;} #menu2 table {border-collapse:collapse; 0; height:0; position:absolute; top:0; left:0;} /* Default link styling */ /* Style the list OR link hover. Depends on which browser is used */ #menu2 a:hover {visibility:visible; position:relative; z-index:200;} #menu2 li:hover {position:relative; z-index:200;} /* keep the 'next' level invisible by placing it off screen. */ #menu2 ul, #menu2 :hover ul ul, #menu2 :hover ul :hover ul ul, #menu2 :hover ul :hover ul :hover ul ul, #menu2 :hover ul :hover ul :hover ul :hover ul ul {position:absolute; left:-9999px; top:-9999px; height:0; margin:0; padding:0; list-style:none;} #menu2 :hover ul.sub {left:0; top:25px; white-space:nowrap; 120px; height:auto; z-index:300; padding-top:5px; background:url(http://www.stunicholls.myby.co.uk/pro_drop12/trans.gif);} #menu2 :hover ul.sub li {display:block; float:left; 100%; height:25px;} #menu2 :hover ul.sub li span {display:block; height:25px; float:left; 90px; font-weight:normal;} #menu2 :hover ul.sub li label{display:block; height:25px; float:left; 30px; font-weight:normal;} #menu2 :hover ul.sub li a {display:block; position:relative; font-size:11px; height:25px; 120px; margin-right:-30px; line-height:25px; text-indent:10px; color:#edb; text-decoration:none; background:url(http://www.stunicholls.myby.co.uk/pro_drop12/trans.gif);} #menu2 :hover ul.sub li span a:hover {color:#f97;} #menu2 :hover ul.sub li:hover > span a {color:#f97;} #menu2 :hover ul :hover ul, #menu2 :hover ul :hover ul :hover ul, #menu2 :hover ul :hover ul :hover ul :hover ul, #menu2 :hover ul :hover ul :hover ul :hover ul :hover ul {left:120px; top:0; white-space:nowrap; 120px; z-index:400; height:auto;} #menu2 :hover ul.wide {150px;} #menu2 :hover ul.wide li span {120px;} #menu2 :hover ul.wide li a {150px;} #menu2 :hover ul.narrow {90px;} #menu2 :hover ul.narrow li span {60px;} #menu2 :hover ul.narrow li a {90px;} #menu2 :hover ul.narrow :hover ul, #menu2 :hover ul :hover ul.narrow :hover ul, #menu2 :hover ul :hover ul :hover ul.narrow :hover ul, #menu2 :hover ul :hover ul :hover ul :hover ul.narrow :hover ul {left:90px;} #menu2 li > span { background: url(http://www.stunicholls.myby.co.uk/pro_drop12/tab-midleft.png); } #menu2 li >label{ background: url(http://www.stunicholls.myby.co.uk/pro_drop12/tab-midright.png) } #menu2 li.fly >label{ background: url(http://www.stunicholls.myby.co.uk/pro_drop12/tab-midright-sub.png) } #menu2 li.subtop > span, #menu2 li.flytop > span { background:url(http://www.stunicholls.myby.co.uk/pro_drop12/tab-topleft.png); } #menu2 li.subtop >label{ background:url(http://www.stunicholls.myby.co.uk/pro_drop12/tab-topright.png); } #menu2 li.flytop >label{ background:url(http://www.stunicholls.myby.co.uk/pro_drop12/tab-topright-sub.png); } #menu2 li.subbot > span, #menu2 li.flybot > span { height:35px !important; background:url(http://www.stunicholls.myby.co.uk/pro_drop12/tab-botleft.png); } #menu2 li.subbot >label{ height:35px !important; background:url(http://www.stunicholls.myby.co.uk/pro_drop12/tab-botright.png); } #menu2 li.flybot >label{ height:35px !important; background:url(http://www.stunicholls.myby.co.uk/pro_drop12/tab-botright-sub.png); } </style>  </head> <body> <h2>3D menu series</h2> <ul id="menu2"> <li class="top"><a href="http://www.cnblogs.com/joe235/" class="top_link">Home</a></li> <li class="top"><a href="http://www.cnblogs.com/joe235/" class="top_link">Contacts</a>  <ul class="sub"> <li class="subtop"><span><a href="http://www.cnblogs.com/joe235/">Support</a></span><label></label></li> <li class="fly"><span><a href="http://www.cnblogs.com/joe235/">Sales</a></span><label></label>  <ul> <li class="subtop"><span><a href="http://www.cnblogs.com/joe235/">USA</a></span><label></label></li> <li><span><a href="http://www.cnblogs.com/joe235/">Canadian</a></span><label></label></li> <li><span><a href="http://www.cnblogs.com/joe235/">South American</a></span><label></label></li> <li class="fly"><span><a href="http://www.cnblogs.com/joe235/">European</a></span><label></label>  <ul class="narrow"> <li class="flytop"><span><a href="http://www.cnblogs.com/joe235/">British</a></span><label></label>  <ul class="narrow"> <li class="subtop"><span><a href="http://www.cnblogs.com/joe235/">London</a></span><label></label></li> <li><span><a href="http://www.cnblogs.com/joe235/">Liverpool</a></span><label></label></li> <li><span><a href="http://www.cnblogs.com/joe235/">Glasgow</a></span><label></label></li> <li class="fly"><span><a href="http://www.cnblogs.com/joe235/">Bristol</a></span><label></label>  <ul class="narrow"> <li class="subtop"><span><a href="http://www.cnblogs.com/joe235/">Redland</a></span><label></label></li> <li><span><a href="http://www.cnblogs.com/joe235/">Hanham</a></span><label></label></li> <li class="subbot"><span><a href="http://www.cnblogs.com/joe235/">Eastville</a></span><label></label></li> </ul>  </li> <li><span><a href="http://www.cnblogs.com/joe235/">Cardiff</a></span><label></label></li> <li class="subbot"><span><a href="http://www.cnblogs.com/joe235/">Belfast</a></span><label></label></li> </ul>  </li> <li><span><a href="http://www.cnblogs.com/joe235/">French</a></span><label></label></li> <li><span><a href="http://www.cnblogs.com/joe235/">German</a></span><label></label></li> <li class="subbot"><span><a href="http://www.cnblogs.com/joe235/">Spanish</a></span><label></label></li> </ul>  </li> <li><span><a href="http://www.cnblogs.com/joe235/">Australian</a></span><label></label></li> <li class="subbot"><span><a href="http://www.cnblogs.com/joe235/">Asian</a></span><label></label></li> </ul>  </li> <li><span><a href="http://www.cnblogs.com/joe235/">Buying</a></span><label></label></li> <li><span><a href="http://www.cnblogs.com/joe235/">Photographers</a></span><label></label></li> <li><span><a href="http://www.cnblogs.com/joe235/">Stockist</a></span><label></label></li> <li class="subbot"><span><a href="http://www.cnblogs.com/joe235/">General</a></span><label></label></li> </ul>  </li> <li class="top"><a href="http://www.cnblogs.com/joe235/" class="top_link">Services</a>  <ul class="sub"> <li class="subtop"><span><a href="http://www.cnblogs.com/joe235/">Printing</a></span><label></label></li> <li><span><a href="http://www.cnblogs.com/joe235/">Photo Framing</a></span><label></label></li> <li><span><a href="http://www.cnblogs.com/joe235/">Retouching</a></span><label></label></li> <li class="subbot"><span><a href="http://www.cnblogs.com/joe235/">Archiving</a></span><label></label></li> </ul>  </li> <li class="top"><a href="http://www.cnblogs.com/joe235/" class="top_link">Products</a>  <ul class="sub"> <li class="flytop"><span><a href="http://www.cnblogs.com/joe235/">Cameras</a></span><label></label>  <ul class="narrow"> <li class="subtop"><span><a href="http://www.cnblogs.com/joe235/">Nikon</a></span><label></label></li> <li><span><a href="http://www.cnblogs.com/joe235/">Minolta</a></span><label></label></li> <li class="subbot"><span><a href="http://www.cnblogs.com/joe235/">Pentax</a></span><label></label></li> </ul>  </li> <li class="fly"><span><a href="http://www.cnblogs.com/joe235/">Lenses</a></span><label></label>  <ul> <li class="subtop"><span><a href="http://www.cnblogs.com/joe235/">Wide Angle</a></span><label></label></li> <li><span><a href="http://www.cnblogs.com/joe235/">Standard</a></span><label></label></li> <li><span><a href="http://www.cnblogs.com/joe235/">Telephoto</a></span><label></label></li> <li class="fly"><span><a href="http://www.cnblogs.com/joe235/">Zoom</a></span><label></label>  <ul> <li class="subtop"><span><a href="http://www.cnblogs.com/joe235/">35mm to 125mm</a></span><label></label></li> <li><span><a href="http://www.cnblogs.com/joe235/">50mm to 250mm</a></span><label></label></li> <li class="subbot"><span><a href="http://www.cnblogs.com/joe235/">125mm to 500mm</a></span><label></label></li> </ul>  </li> <li><span><a href="../boxes/">Mirror</a></span><label></label></li> <li class="flybot"><span><a href="http://www.cnblogs.com/joe235/">Non standard</a></span><label></label>  <ul> <li class="subtop"><span><a href="http://www.cnblogs.com/joe235/">Bayonet mount</a></span><label></label></li> <li class="subbot"><span><a href="http://www.cnblogs.com/joe235/">Screw mount</a></span><label></label></li> </ul>  </li> </ul>  </li> <li><span><a href="http://www.cnblogs.com/joe235/">Flash Guns</a></span><label></label></li> <li><span><a href="http://www.cnblogs.com/joe235/">Tripods</a></span><label></label></li> <li class="subbot"><span><a href="http://www.cnblogs.com/joe235/">Filters</a></span><label></label></li> </ul>  </li> <li class="top"><a href="http://www.cnblogs.com/joe235/" class="top_link">Where to find us</a>  <ul class="sub wide"> <li class="subtop"><span><a href="http://www.cnblogs.com/joe235/">Travelling by car or rail</a></span><label></label></li> <li><span><a href="http://www.cnblogs.com/joe235/">Using public transport</a></span><label></label></li> <li class="subbot"><span><a href="http://www.cnblogs.com/joe235/">Our place on the map</a></span><label></label></li> </ul>  </li> <li class="top"><a href="http://www.cnblogs.com/joe235/" class="top_link">Shop</a>  <ul class="sub narrow"> <li class="subtop"><span><a href="http://www.cnblogs.com/joe235/">Online</a></span><label></label></li> <li><span><a href="http://www.cnblogs.com/joe235/">Catalogue</a></span><label></label></li> <li class="subbot"><span><a href="http://www.cnblogs.com/joe235/">Mail Order</a></span><label></label></li> </ul>  </li> <li class="top"><a href="http://www.cnblogs.com/joe235/" id="privacy" class="top_link">Privacy Policy</a></li> </ul> <img src="http://www.stunicholls.myby.co.uk/pro_drop12/model3.jpg" alt="model" title="model" /> </body> </html>
提示：可以先在文本框内，根据需要修改代码后再运行
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原文地址：https://www.cnblogs.com/joe235/p/1332548.html

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漂亮的透明css菜单 下拉效果

漂亮的透明css菜单下拉效果