html,
body {
	width: 100%;
	height: 100%;
}

html,
body,
body * {
	margin: 0;
	padding: 0;
}

body {
	background-color: #000;
}

.wrapper {
	display: flex;
	flex-direction: column;
	height: 100vh;
}

.box {
	width: 100%;
	height: 50%;
	flex-grow: 1;
}

.wrapper.landscape {
	flex-direction: row;
}

.wrapper.landscape .box {
	width: 50%;
	height: 100%;
}

a {
	display: block;
	width: 100%;
	height: 100%;
	-webkit-transition: all 0.5s ease-in-out;
	-moz-transition: all 0.5s ease-in-out;
	-o-transition: all 0.5s ease-in-out;
	-ms-transition: all 0.5s ease-in-out;
	transition: all 0.5s ease-in-out;
}

a * {
	-webkit-transition: all 0.5s ease-in-out;
	-moz-transition: all 0.5s ease-in-out;
	-o-transition: all 0.5s ease-in-out;
	-ms-transition: all 0.5s ease-in-out;
	transition: all 0.5s ease-in-out;
}

a .container {
	position: relative;
	width: 100%;
	height: 100%;
	overflow: hidden;
}

a .container .background {
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	width: 100%;
	height: 100%;
	background-position: 50% 50%;
	background-repeat: no-repeat;
	background-size: cover;
	opacity: 0.25;
}

a .container .transparency {
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	width: 100%;
	height: 100%;
	-webkit-backdrop-filter: blur( 10px );
	backdrop-filter: blur( 10px );
}

a .container .logo {
	position: absolute;
	top: 50%;
	left: 50%;
	width: 80%;
	height: 80%;
	background-position: 50% 50%;
	background-repeat: no-repeat;
	background-size: contain;
}

a:link .container .background,
a:visited .container .background {
	transform: scale( 1.2 );
}

a:hover .container .background,
a:active .container .background {
	transform: scale( 1 );
}

a:link .container .transparency,
a:visited .container .transparency {
	opacity: 0;
}

a:hover .container .transparency,
a:active .container .transparency {
	opacity: 1;
}

a:link .container .logo,
a:visited .container .logo {
	transform: translate( -50%, -50% ) scale( 0.8 );
}

a:hover .container .logo,
a:active .container .logo {
	transform: translate( -50%, -50% ) scale( 1 );
}

.box.nutrition a .background {
	background-image: url( background-n.jpg );
}

.box.nutrition a .transparency {
	background-color: rgba( 0, 0, 0, 0.5 );
}

.box.nutrition a .logo {
	background-image: url( logo-n.png );
}

.box.original a .background {
	background-image: url( background-o.jpg );
}

.box.original a .transparency {
	background-color: rgba( 0, 0, 0, 0.5 );
}

.box.original a .logo {
	background-image: url( logo-o.png );
}