body {
  margin: 0;
  background-color: black;
  background: url('assets/pattern-tile2.png') repeat;
  animation: scrollBackground 5s linear infinite;
}

.videohero {
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}

@keyframes scrollBackground {
  from {
    background-position: 0 0;
  }
  to {
    background-position: 0 40px;
  }
}