.video {
  position: fixed;
  top: 50%;
  left: 50%;
  z-index: 1;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  -webkit-transform: translate(-50%, -50%);
      -ms-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}

@media screen and (max-width: 1380px) {

.video {
  position: fixed;
  top: 30%;
  left: 50%;
  z-index: 1;
  min-width: 100%;
  min-height: auto;
  width: 1380px;
  height: auto;
  -webkit-transform: translate(-50%, -50%);
      -ms-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}
}
@media screen and (max-width: 1240px) {

.video {
  position: fixed;
  top: 30%;
  left: 50%;
  z-index: 1;
  min-width: 100%;
  min-height: auto;
  width: 1240px;
  height: auto;
  -webkit-transform: translate(-50%, -50%);
      -ms-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}
}

@media screen and (max-width: 1024px) {

.video {
  position: fixed;
  top: 30%;
  left: 50%;
  z-index: 1;
  min-width: 100%;
  min-height: auto;
  width: 1024px;
  height: auto;
  -webkit-transform: translate(-50%, -50%);
      -ms-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}
}

@media screen and (max-width: 768px) {

.video {
  position: fixed;
  top: 15%;
  left: 50%;
  z-index: 1;
  min-width: 100%;
  min-height: auto;
  width: 100%;
  height: auto;
  -webkit-transform: translate(-50%, -50%);
      -ms-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}
}