利用css3仿造window7的开始菜单

<p id="startmenu"> 
<ul id="programs"> 
<li><a href="#"><img src="firefox-32.png" alt="" />Mozilla Firefoxa></li> 
<li><a href="#"><img src="chrome.png" alt="" />Google Chromea></li> 
<li><a href="#"><img src="safari.png" alt="" />Safaria></li> 
<li><a href="#"><img src="opera.png" alt="" />Operaa></li> 
<li><a href="#"><img src="ie.png" alt="" />Internet Explorera></li> 
<li><a href="#"><img src="rss_32.png" alt="" />RSS Feedsa></li> 
<li><a href="#"><img src="twitter_32.png" alt="" />Twittera></li> 
<li><a href="#"><img src="delicious_32.png" alt="" />Deliciousa></li> 
<ul> 
<ul id="links"> 
<li class="icon"><img src="folder.png" alt="" /></li> 
<li><a href="#"><span>Documentsspan>a></li> 
<li><a href="#"><span>Picturesspan>a></li> 
<li><a href="#"><span>Musicspan>a></li> 
<li><a href="#"><span>Computerspan>a></li> 
<li><a href="#"><span>Networkspan>a></li> 
<li><a href="#"><span>Connect tospan>a></li> 
<ul> 
p>

#startmenu { border:solid 1px #102a3e; overflow:visible; display:inline-block; margin:60px 0 0 20px; 
-moz-border-radius:5px;-webkit-border-radius:5px; position:relative; 
box-shadow: inset 0 0 1px #fff; -moz-box-shadow: inset 0 0 1px #fff; -webkit-box-shadow: inset 0 0 1px #fff; 
background-color:#619bb9; 
background: -moz-linear-gradient(top, rgba(50, 123, 165, 0.75), rgba(46, 75, 90, 0.75) 50%, rgba(92, 176, 220, 0.75)); 
background: -webkit-gradient(linear, center top, center bottom, from(#327aa4),color-stop(45%, #2e4b5a), to(#5cb0dc)); }

-moz-border-radius:5px;-webkit-border-radius:5px;圆角效果，这是css3中应用最广的 
box-shadow: inset 0 0 1px #fff; -moz-box-shadow: inset 0 0 1px #fff; -webkit-box-shadow: inset 0 0 1px #fff;阴影效果 
background: -moz-linear-gradient(top, rgba(50, 123, 165, 0.75), rgba(46, 75, 90, 0.75) 50%, rgba(92, 176, 220, 0.75));渐变背景

#programs { background:#fff; border:solid 1px #365167; margin:7px 0 7px 7px; 
box-shadow: 0 0 1px #fff; -moz-box-shadow: 0 0 1px #fff; -webkit-box-shadow: 0 0 1px #fff; 
-moz-border-radius:3px;-webkit-border-radius:3px;} 
#programs a { border:solid 1px transparent; display:block; padding:3px; margin:3px; 
color:#4b4b4b; text-decoration:none; min-width:220px;} 
#programs a:hover {border:solid 1px #7da2ce; 
-moz-border-radius:3px; -webkit-border-radius:3px; 
box-shadow: inset 0 0 1px #fff; -moz-box-shadow: inset 0 0 1px #fff; -webkit-box-shadow: inset 0 0 1px #fff; 
background-color:#cfe3fd; 
background: -moz-linear-gradient(top, #dcebfd, #c2dcfd); 
background: -webkit-gradient(linear, center top, center bottom, from(#dcebfd), to(#c2dcfd));} 
#programs a img {border:0; vertical-align:middle; margin:0 5px 0 0;}

#links {margin:7px; margin-top:-30px;} 
#links li.icon {text-align:center;} 
#links a {border:solid 1px transparent; display:block; margin:5px 0; position:relative; 
color:#fff; text-decoration:none; min-width:120px;} 
#links a:hover {border:solid 1px #000; 
-moz-border-radius:3px; -webkit-border-radius:3px; 
box-shadow: 0 0 1px #fff; -moz-box-shadow: inset 0 0 1px #fff; -webkit-box-shadow: inset 0 0 1px #fff; 
background-color:#658da0; 
background: -moz-linear-gradient(center left, rgba(81,115,132,0.55), rgba(121,163,184,0.55) 50%, rgba(81,115,132,0.55)); 
background: -webkit-gradient(linear, 0% 100%, 100% 100%, from(#517384), color-stop(50%, #79a3b8), to(#517384)); 
} 
#links a span { padding:5px; display:block; } 
#links a:hover span { background: -moz-linear-gradient(center top, transparent, transparent 49%, rgba(2,37,58,0.5) 50%, rgba(63,111,135,0.5)); 
background: -webkit-gradient(linear, center top, center bottom, from(transparent), color-stop(49%, transparent), 
color-stop(50%, rgba(2,37,58,0.5)), to(rgba(63,111,135,0.5))); }