html, body {
	height: 100%;
}

#centeredcontent {
  position: absolute;
  top: 50%;
  left: 50%;
  margin-top: 0%;
  margin-left: -28%;
} 

.bg {
	width: 100%;
	position: absolute;
	top: 0;
	left: 0;
	z-index: -1;
}