写了几个CSS3的圆角框架示例代码.

*{padding:0; margin:0; line-height:1;}
body{
padding:20px;
}
.round{
width:20%;
border:1px #ccc solid;
border-color:#ccc;
border-radius: 5px;
-webkit-box-shadow:2px 2px 2px #eee;
-moz-box-shadow:2px 2px 2px #eee;
margin:10px;
}
.round h2{
padding:5px;
line-height:1.5;
font-size:14px;
border-bottom:1px solid #fff;
background:#efefef;
background-image:-moz-linear-gradient(top, #fff, #eee);
background-image:-webkit-linear-gradient(top,#fff,#eee);
}
.round .frame{
padding:5px;
line-height:2;
font-size:12px;
}
.roundv2 h2{
background-color:#D9DDE1;
background-image:-moz-linear-gradient(top, #D9DDE1, #C2C8CD);
background-image:-webkit-linear-gradient(top,#D9DDE1,#C2C8CD);
}
.menu{
width:50%;
border-radius: 5px;
margin:10px;
background:#3C7EC8;
background-image:-moz-linear-gradient(top, #4989CD, #3372C0);
background-image:-webkit-linear-gradient(top,#4989CD,#3372C0);
line-height:2;
padding:0 1em;
color:#fff;
}
.titlebtn{
border-radius: 5px;
background-color:#efefef;
background-image:-moz-linear-gradient(top, #EFEFEF, #CCC);
background-image:-webkit-linear-gradient(top,#EFEFEF,#CCC);
width:200px;
line-height:2;
padding:0 1em;
margin:20px 10px;
position:relative;
text-indent:48px;
}
.titlebtn .icon{
background:url('n.png') no-repeat left top;
width:48px;
height:48px;
display:block;
position:absolute;
top:-10px;
left:5px;
}
.titlebtn a{
font-weight:bold;
font-family:'微软雅黑';
}