popup mobile/responsive

mobpop.css

#area {
	position: relative;
}

.popup {
	position: fixed;
	width: 100%;
	height: 100%;
	top: 0;
	left: 0;
	background: #ffffff;
	z-index: 5059;
	padding: 3em 1em 1em 1em;
	overflow: auto;
	-webkit-overflow-scrolling: touch; 
}

a#closeBut {
	position: absolute;
	top: 7px;
	right: 7px;
	margin: 0;
	display: block;
	font-weight: bold;
	padding: 5px 12px;
	color: #FFF;
	border-radius: 16px;
	text-shadow: 0 1px 1px #0F2E54;
	border: none;
	background: #ff0000;
	cursor: pointer;
}

a#closeBut:before {
	content: "X";
}

@media screen and (min-width:768px) {

	.popup {
		position: absolute;
		width: 512px;
		min-height: 256px;
		height: auto;
		top: 50%;
		margin-top: -128px;
		left: 50%;
		margin-left: -256px;
		border: 4px #cacaca solid;
		overflow: visible;
	}

}