/* http://www.sixapart.com/pronet/articles/ydsf_-_robust_c.html */

.ydsf {

}
html>body .ydsf {
    margin: 20px auto; /*	margin: 10px -10px -10px 10px;*/
    background: url(shadow.png) right bottom no-repeat;
}

.ydsf:before,
.ydsf:after {
	content: " ";
	display: block;
	width: 10px;
	height: 10px;
	background: inherit;	
}

.ydsf:before {
	position: absolute;
	top: 0;
	right: 0;
	margin: -10px 0 0 auto;
	background-position: right top;
}
.ydsf:after {
	margin: -10px 0 0 -10px;
	background-position: left bottom;
}
.ydsf .inner {
	display: block;
	position: relative;
	overflow: hidden; /* prevents margin leakage from child elements */
	left: -4px;
	top: -4px;
	background: #fff;
}

html>body .ydsf .inner {
	left: -10px;
	top: -10px;
	margin: 0;
}

.center {
    /*margin: 20px auto;*/
    width: 800px;
}

.right { float: right; }