html {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}
body {
  background: #fff; 
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  position: relative;
  font-family: 'Merriweather', serif;
  font-size: 1.2rem;
  color: #000;
  line-height: 1.7rem;
}
video { 
  position: fixed;
  top: 50%;
  left: 50%;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  z-index: -100;
  transform: translateX(-50%) translateY(-50%);
  background-color: #fff;
  background-size: cover;
  transition: 1s opacity;
}
.stopfade { 
   opacity: .5;
}
#container {
  position: absolute;
  bottom: 15px;
  left: 20px;
}

@media screen and (max-width: 500px) { 
  div{width:70%;} 
}
@media screen and (max-device-width: 800px) {
  html { background: url(http://demosthenes.info/assets/images/polina.jpg) #000 no-repeat center center fixed; }
  #bgvid { display: none; }
}