index.css

        html, body {
        	height: 100%;
        }

        html {
        	/*display: table;*/
        	/*margin: auto;*/
        }

        body {
        	/*display: table-cell;
        	vertical-align: middle;*/
        	margin: 0;
        	padding: 0;
        	overflow: hidden;
        	background-color: #254f96;
        	/*background-image: url('http://media0.giphy.com/media/10D60NnXkMIaHe/giphy.gif');*/
        	background-size: cover;
        }
        /*div {
        	text-align: justify;
        }*/

        @font-face {
        	font-family: 'digital-7regular';
        	src: url('assets/digital-7-webfont.woff2') format('woff2'), url('assets/digital-7-webfont.woff') format('woff');
        	font-weight: normal;
        	font-style: normal;
        }

        .center {
        	height: 900px;
        	position: relative;
        }

        .center div {
        	margin: 0;
        	position: absolute;
        	top: 50%;
        	left: 50%;
        	-ms-transform: translate(-50%, -50%);
        	transform: translate(-50%, -50%);
        }

        #nummer {
        	font-family: 'digital-7regular';
        	color: #fff;
        	font-weight: 500;
        	font-size: 400px;
        	/*margin: auto;*/
        }

        @media all and (min-width: 1100px) {
        	#nummer {
        		font-size: 900px;
        	}
        }

        @media all and (min-width: 960px) and (max-width: 1099px) {
        	#nummer {
        		font-size: 800px;
        	}
        }

        @media all and (max-width: 959px) and (min-width: 600px) {
        	#nummer {
        		font-size: 600px;
        	}
        }

        #logo {
        	/*float: left;*/
        	position: fixed;
        	top: 10px;
        	left: 10px;
        	background: url(assets/logo.png);
        	background-size: 140px;
        	background-repeat: no-repeat;
        	width: 150px;
        	height: 200px;
        }

        #sv {
        	font-family: Ubuntu, sans-serif;
        	position: fixed;
        	bottom: 10px;
        	right: 10px;
        	color: #f88a00;
        	font-size: 20px;
        }

        #bg {
        	position: fixed;
        	top: -50%;
        	left: -50%;
        	width: 200%;
        	height: 200%;
        }

        #bg img {
        	position: absolute;
        	top: 0;
        	left: 0;
        	right: 0;
        	bottom: 0;
        	margin: auto;
        	min-width: 50%;
        	min-height: 50%;
        }