html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
}

body {
  display: flex;
  display: -webkit-flex;
  flex-direction: column;
  -webkit-flex-direction: column;
  justify-content: center;
  -webkit-justify-content: center;
  background-color: #000;
  background-color: rgba(0, 0, 0, 0.75);
}

#video {
  width: 100%;
  box-shadow: 0 2px 8px 4px rgba(0, 0, 0, 0.2);
}