body {
  margin: 0;
  background: #000;
}

video {
  position: fixed;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  max-height: 120%;
  width: auto;
  height: auto;
  z-index: -100;
  -webkit-transform: translateX(-50%) translateY(-50%);
      -ms-transform: translateX(-50%) translateY(-50%);
          transform: translateX(-50%) translateY(-50%);
  background: url('') no-repeat;
  background-size: cover;
  -webkit-transition: .1s opacity;
          transition: .1s opacity;
}

.stopfade {
  opacity: .5;
}

#seymoure {
  background: rgba(0, 0, 0, 0);
  color: white;
  padding: 1rem;
  width: 60%;
  margin: auto;
  float: inherit;
}


@media screen and (max-width: 500px) {
  div {
    width: 70%;
  }
}

@media screen and (max-device-width: 800px) {
  html {
    background: url(http://www.seymoure.com/picture/all_1_anim.gif) #000 no-repeat center center fixed ;
      background-size: 100%;
  }
  #bgvid {
    display: none;
  }
}

.container {
  display: table;
  height: 100%;
  position: absolute;
  overflow: hidden;
  width: 100%;
}

.helper {
  #position: absolute;
  /*a variation of an "lte ie7" hack*/
  
  #top: 50%;
  display: table-cell;
  vertical-align: middle;
}

.content {
  #position: relative;
  #top: -50%;
  margin: 0 auto;
  width: 100%;
}