/*desktop*/
@media only screen and (min-width: 1401px) {

   video { 
      position: fixed;
      top: 50%;
      left: 50%;
      min-width: 100%;
      min-height: 100%;
      width: auto;
      height: auto;
      z-index: -100;
      transform: translateX(-50%) translateY(-50%);
   background: url('//demosthenes.info/assets/images/polina.jpg') no-repeat;
    background-size: cover;
    transition: 1s opacity;
  }
  .stopfade { 
     opacity:1;
  }

}

/*laptop*/
@media only screen and (min-width: 769px) and (max-width: 1400px) {

   video { 
      position: fixed;
      top: 50%;
      left: 50%;
      min-width: 100%;
      min-height: 100%;
      width: auto;
      height: auto;
      z-index: -100;
      transform: translateX(-50%) translateY(-50%);
   background: url('//demosthenes.info/assets/images/polina.jpg') no-repeat;
    background-size: cover;
    transition: 1s opacity;
  }
  .stopfade { 
     opacity:1;
  }

}


/*mobil*/
@media only screen and (min-width: 320px) and (max-width: 768px) {

   video { 
      width: 100%;
      height: auto;
      z-index: -100;
      background: url('//demosthenes.info/assets/images/polina.jpg') no-repeat;
      background-size: cover;
    t ransition: 1s opacity;
  }
  .stopfade { 
     opacity:1;
  }

}