body {
  margin:50px 0px; padding:0px;
  text-align:center;
  background-image: -webkit-gradient(
  	linear,
  	left top,
  	right bottom,
  	color-stop(0, #289EED),
  	color-stop(1, #D1E7FF)
  );
  background-image: -o-linear-gradient(right bottom, #289EED 0%, #D1E7FF 100%);
  background-image: -moz-linear-gradient(right bottom, #289EED 0%, #D1E7FF 100%);
  background-image: -webkit-linear-gradient(right bottom, #289EED 0%, #D1E7FF 100%);
  background-image: -ms-linear-gradient(right bottom, #289EED 0%, #D1E7FF 100%);
  background-image: linear-gradient(to right bottom, #289EED 0%, #D1E7FF 100%);
  background-size: cover;
  }

#Content {
     position: absolute;
     top: 50%;
     left: 50%;
     width: 500px;
     height: 500px;
     margin-top: -250px; /* Half the height */
     margin-left: -250px; /* Half the width */
  }

#countdown {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 500px;
  height: 500px;
  margin-top: -250px; /* Half the height */
  margin-left: -250px; /* Half the width */
}