
#videoplayer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  min-width: 100%;
  min-height: 100%;
  overflow: hidden;
}

video {

  min-width: 100%;
  min-height: 100%;
  background: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/4273/polina.jpg') no-repeat;
  background-size: cover;
  opacity: 0.3;
  -webkit-transition: 1s opacity; transition: 1s opacity;
  overflow: hidden;
}

button {
  position:fixed;
  top:100px;
  left: 100px;
  display: block;
  width: 200px;
  padding: .4rem;
  border: none;
  margin: 1rem auto;
  font-size: 1.3rem;
  background: rgba(255,255,255,0.23);
  color: #fff;
  border-radius: 3px;
  cursor: pointer;
  -webkit-transition: .3s background;
  transition: .3s background;
}
#videoplayer button:hover {
  background: rgba(0,0,0,0.5);
}

@media screen and (max-width: 500px) {
  div{width:70%;}
}
@media all and (max-device-width: 800px) {
  body { background: url("https://s3-us-west-2.amazonaws.com/s.cdpn.io/4273/polina.jpg") #000 no-repeat center center fixed; background-size: cover; }
  #bgvid, #videoplayer button { display: none; }
  div{width:70%;}
}
.stopfade { opacity: 1;
}
