video { 
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    z-index: -100;
    -webkit-transform: translateX(-50%) translateY(-50%);
            transform: translateX(-50%) translateY(-50%);           
    background-size: cover;
    -webkit-transition: 1s opacity;
    transition: 1s opacity;
}
#bgvid {
    min-height: 100%;
    background: #000;
}