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('../img/header-mob.png') no-repeat;
  background-size: cover;
  transition: 1s opacity;
}


@media (max-width: 800px) {
  /*html { background: url(../img/header-mob.png) #000 no-repeat center center fixed; }*/
  #bgvid { display: none; }
  #headerMOB {display:inline-block;}
  #firstBtn {font-size:12px !important;}
}

@media screen and (min-width: 801px) {
	 #headerMOB {display:none;}
	 #firstBtn {margin-top:300px;} 
}