html, body {
	width: 100%;
	height: 100%;
  margin: 0px;
  padding: 0px;
	display: flex;
	justify-content: center;
	align-items: center;
}

.container {
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: #0000FF;
  padding: 0;
  margin: 0;
  display: -webkit-flex;
  display: flex;
  background-image: url(dtx.jpg);
  background-size: cover;
  background-position: top center;
}