提取自百度有啊的css圆角效果

复制代码 代码如下:






.box1{background:url('https://www.jb51.net/upload/20090330140617327.gif') repeat-x #1d6cb7;margin-top:1em;position:relative;zoom:1;width:778px;}
.box1 .tl,.box1 .tr,.box1 .bl,.box1 .br {width:5px;height:5px;position:absolute;background:url('https://www.jb51.net/upload/20090330140618989.gif') no-repeat;overflow:hidden; }
.box1 .cc{height:40px; padding:5px;}
.box1 .tl {left:0;top:0;}
.box1 .tr {right:0;top:0;background-position:0 -5px;}
.box1 .bl {left:0;bottom:0;background-position:0 -10px;}
.box1 .br {right:0;bottom:0;background-position:0 -15px;}
.box2{border:1px solid #84cedd;margin-bottom:.8em;position:relative;zoom:1;width:778px;}
.box2 .tl,.box2 .tr,.box2 .bl,.box2 .br {width:6px;height:6px;position:absolute;background:url('https://www.jb51.net/upload/20090330140618283.gif') no-repeat;overflow:hidden;}
.box2 .cc{height:40px; padding:5px;}
.box2 .tl {left:-1px;top:-1px;}
.box2 .tr {right:-1px;top:-1px;background-position:0 -6px;}
.box2 .bl {left:-1px;bottom:-1px;background-position:0 -12px;}
.box2 .br {right:-1px;bottom:-1px;background-position:0 -18px;}
.box3{position:relative;zoom:1;padding:1em 1.5em;margin:.5em 0 1em 0; background:#f1f6de}
.box3 .tl,.box3 .tr,.box3 .bl,.box3 .br {width:5px;height:5px;position:absolute;background:url('https://www.jb51.net/upload/20090330140618807.gif') no-repeat;overflow:hidden;}
.box3 .cc{height:40px; padding:5px;}
.box3 .tl {left:0;top:0;}
.box3 .tr {right:0;top:0;background-position:0 -5px;}
.box3 .bl {left:0;bottom:0;_bottom:-1px;background-position:0 -10px;}
.box3 .br {right:0;bottom:0;_bottom:-1px;background-position:0 -15px;}

圆角一

圆角二

圆角三