/* mixins */
.box-shadow (@string) {
	-webkit-box-shadow: @string;
	   -moz-box-shadow: @string;
	        box-shadow: @string;
}
.drop-shadow (@x: 0, @y: 1px, @blur: 2px, @spread: 0, @alpha: 0.25) {
	-webkit-box-shadow: @x @y @blur @spread rgba(0, 0, 0, @alpha);
	   -moz-box-shadow: @x @y @blur @spread rgba(0, 0, 0, @alpha);
	        box-shadow: @x @y @blur @spread rgba(0, 0, 0, @alpha);
}
.border-radius (@radius: 5px) {
	-webkit-border-radius: @radius;
	   -moz-border-radius: @radius;
	        border-radius: @radius;

	   -moz-background-clip: padding;
	-webkit-background-clip: padding-box;
	        background-clip: padding-box;
}
/* end mixins */

.zero-interstitial {
	position: fixed;
	padding: 25px 0;
	width: 70%;
	max-height: 70%;
	min-height: 400px;
	margin: 15%;
	border: 1px solid #AAA;
	.drop-shadow(@y: 4px);
	.border-radius(25px);

	.overlay-header-container, .overlay-footer-container {
		border: none;
	}

	.overlay-content {
		height: 100%;
		text-align: center;

		.button-bar {
			width: 100%;
			position: absolute;
			bottom: 0;

			button {
				max-width: 100%;
				width: 100%;
				display: block;
				border: none;
				border-top: 1px solid #CCC;
			}
			button:last-of-type {
				border-bottom-left-radius: 25px;
				border-bottom-right-radius: 25px;
			}
		}
	}
}