html, body, .twist {
	width: 100%;
	height: 100%;
}
*, *:after, *:before { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; }

button {
	border: none;
	padding: 0.6em 1.2em 0.4em;
	cursor: pointer;
	display: inline-block;
	margin: 10px;
	outline: none;
	background: none;
}
button:hover,
button:active {
	background: #D8505C;

}

.twist {
	position: relative;
}

.container {
	width: 100%;
	min-height: 100%;
	position: relative;
	outline: 1px solid rgba(0,0,0,0);
	z-index: 10;
	-webkit-transform: translateZ(0) translateX(0) rotateY(0deg); 
	transform: translateZ(0) translateX(0) rotateY(0deg);
}

.wrapper {
	position: relative;
}
.twist.open {
	position: fixed;
	-webkit-perspective: 1500px;
	perspective: 1500px;
}

.open .container {
	position: absolute;
	overflow: hidden;
	width: 100%;
	height: 100%;
	cursor: pointer;
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;
}

.open .wrapper {
	-webkit-transform: translateZ(-1px); 
}

.animate .container::after {
	opacity: 1;
	height: 101%;
	-webkit-transition: opacity 0.3s;
	transition: opacity 0.3s;
}
.offscreen-nav {
	position: absolute;
	height: auto;
	font-size: 2em;
	top: 50%;
	-webkit-transform: translateY(-50%);
	transform: translateY(-50%);
	-webkit-transform-style: preserve-3d;
	transform-style: preserve-3d;
    left: 25%;
}

.offscreen-nav a {
	display: inline-block;
	white-space: nowrap;
	font-weight: 300;
    text-decoration: none;
	margin: 0 0 30px 0;
	color: #fff;
	-webkit-transition: color 0.3s;
	transition: color 0.3s;
	-webkit-transform-style: preserve-3d;
	transform-style: preserve-3d;
}

.offscreen-nav a:hover {
	color: #D8505C;
}

.offscreen-nav a {
	display: block;
}

.effect-persp .container {
	-webkit-transition: -webkit-transform 0.4s;
	transition: transform 0.4s;
	-webkit-transform-origin: 50% 50%;
	transform-origin: 50% 50%;
}

.effect-persp.animate .container {
	-webkit-transform: translateZ(-1500px) translateX(100%) rotateY(-45deg);
	transform: translateZ(-1500px) translateX(100%) rotateY(-45deg);
}

.effect-persp .offscreen-nav a {
	opacity: 0;
	-webkit-transform: translateX(-150px);
	transform: translateX(-150px);
	-webkit-transition: -webkit-transform 0.4s, opacity 0.4s;
	transition: transform 0.4s, opacity 0.4s;
}

.effect-persp.animate .offscreen-nav a {
	opacity: 1;
	-webkit-transform: translateX(0);
	transform: translateX(0);
}

/* Media Queries */
@media screen and (max-width: 31em), screen and (max-height: 36.2em) {
	.offscreen-nav {
		font-size: 1.2em;
		width: 6.8em;
	}
    .header {
		margin-bottom: 0;
		padding-bottom: 1em;
	}
	.column {
		width: 100%;
		min-width: auto;
		min-height: 0;
		padding: 2em; 
		text-align: center;
	}
	.column p {
		font-size: 1.5em;
	}
	.column:nth-child(2) {
		text-align: center;
		box-shadow: 0 -1px 0 rgba(0,0,0,0.1);
	}
}
@media screen and (max-height: 31.6em) {
	.offscreen-nav a {
		margin-bottom: 12px;
	}
    .header {
		font-size: 80%;
	}
}