Vertical Center Auto-prefixed

styles.css

.vertical-center {
	min-height: 100vh;
	margin: 0;
	display: -webkit-box;
	display: -webkit-flex;
	display: -ms-flexbox;
	display: flex;
	-webkit-box-align: center;
	-webkit-align-items: center;
	    -ms-flex-align: center;
	        align-items: center;
}