modal.css

.blocker {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	overflow: auto;
	z-index: 9999;
	box-sizing: border-box;
	background-color: rgb(0,0,0);
	background-color: rgba(0,0,0,0.75);
	text-align: center;
}

.blocker:before{
	content: "";
	display: inline-block;
	height: 100%;
	vertical-align: middle;
	margin-right: -0.05em;
}

.blocker.behind {
	background-color: transparent;
}

.modal {
	width: 400px;
	text-align: left;
	background: #fff;
	display: inline-block;
	vertical-align: middle;
	position: relative;
	z-index: 2;
	border-radius: 3px;
	padding: 10px;
}

.modal a.close-modal {
	position: absolute;
	top: -12.5px;
	right: -12.5px;
	display: block;
	width: 30px;
	height: 30px;
	text-indent: -9999px;
	background: url(images/close.png) no-repeat 0 0;
}

.modal-spinner {
	display: none;
	width: 64px;
	height: 64px;
	position: fixed;
	top: 50%;
	left: 50%;
	margin-right: -32px;
	margin-top: -32px;
	background: url(images/spinner_big.gif) no-repeat center center;
	-webkit-border-radius: 8px;
	-moz-border-radius: 8px;
	-o-border-radius: 8px;
	-ms-border-radius: 8px;
	border-radius: 8px;
}