body {
  font-family: 'Roboto', sans-serif;
  font-size: 16px;
  margin: 0;
  line-height: 1.5;
  color: #242424;
  overflow: auto;
  background-size: 10%;
}
#video_background{ 
  animation: animate 120s linear infinite;
  position: fixed;
  right: 0;
  bottom: 0;
  min-width: 100%;
  min-height: 50%;
  width: auto;
  height: auto;
  z-index: -100; 
  overflow: hidden;
  background-size: cover;
  opacity: 0.7;
}

@keyframes animate {
  0%  {transform: rotateY(0deg);}
  100%{transform: rotateY(360deg);}
}