.video-wrapper {
    max-height: 600px;
    overflow: hidden;
}
video#bgvid { 
    position: relative;
    margin-top: -10%;
    width: 100%;
    z-index: -1000;
}
@media screen and (min-width: 1700px) {
    video#bgvid { 
        margin-top: -15%;
    }
}
@media screen and (max-width: 1100px) {
    video#bgvid { 
        margin-top: 0px;
    }
}