/* Overlay style */
.overlay {
	position: fixed;
	width: 100%;
	height: 100%;
	top: 0;
	left: 0;
	background: rgba(31,40,59,0.9);
}

/* Overlay closing cross */
.overlay .overlay-close {
	width: 20px;
	height: 20px;
	position: absolute;
	right: 20px;
	top: 20px;
	overflow: hidden;
	border: none;
	background: url(../images/cross.png) no-repeat center center;
	text-indent: 200%;
	color: transparent;
	outline: none;
	z-index: 100;
}

/* Menu style */
.overlay nav {
	text-align: center;
	position: relative;
width:100%;padding:20% 10%;

}

.overlay ul {
	list-style: none;
	padding: 0; width:100%;
	margin: 0 auto;
	display: inline-block;
	height: 100%;
	position: relative;
}

.overlay ul li {
	display: block;
	height: 20%;

	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;
}

.overlay ul li a {
	font-size: 16px; 

	display: block;
	color: #fff;
	-webkit-transition: color 0.2s;
	transition: color 0.2s;
}

.overlay ul li a:hover,
.overlay ul li a:focus {
	color: #f0f0f0;
}

/* Effects */
.overlay-door {
	visibility: hidden;
	width: 0;
	left: 50%;
	-webkit-transform: translateX(-50%);
	transform: translateX(-50%);
	-webkit-transition: width 0.5s 0.3s, visibility 0s 0.8s;
	transition: width 0.5s 0.3s, visibility 0s 0.8s;
}

.overlay-door.open {
	visibility: visible;
	width: 100%;
	-webkit-transition: width 0.5s;
	transition: width 0.5s;
}

.overlay-door nav {
	position: absolute;
	
}

.overlay-door nav,
.overlay-door .overlay-close {
	opacity: 0;
	-webkit-transition: opacity 0.3s 0.5s;
	transition: opacity 0.3s 0.5s;
}

.overlay-door.open nav,
.overlay-door.open .overlay-close {
	opacity: 1;
	-webkit-transition-delay: 0.5s;
	transition-delay: 0.5s;
}

.overlay-door.close nav,
.overlay-door.close .overlay-close {
	-webkit-transition-delay: 0s;
	transition-delay: 0s;
}

@media screen and (max-height: 30.5em) {
	.overlay nav {
		height: 70%;
		font-size: 34px;
	}
	.overlay ul li {
		min-height: 34px;
	}
}