.box{ width:100%;}
.box .tl,.box .tr,.box .bl,.box .br{width:10px;height:10px;}
.box .tl{background:url(images/box-tl.png) no-repeat top left;}
.box .tr{background:url(images/box-tr.png) no-repeat top right;}
.box .bl{background:url(images/box-bl.png) no-repeat bottom left;}
.box .br{background:url(images/box-br.png) no-repeat bottom right;}

.box .t{background:url(images/box-border.png) repeat-x top center; height:10px;}
.box .b{background:url(images/box-border.png) repeat-x bottom center; height:10px;}
.box .l{background:url(images/box-border.png) repeat-y top left; width:10px;}
.box .r{background:url(images/box-border.png) repeat-y top right; width:10px;}

.box .content{background-color:#fdfdfd; padding:20px 10px 10px 10px;}