* {
  box-sizing: border-box;
}

html,
body {
	height: 100%;
	overflow: hidden;
}

body {
	background: #121212;
	min-height: 100%;
	font-family: "Arial", sans-serif;
}

#center {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
}