/* Default to hide the video on all devices */
#video{display:none}

/* Default to display the image on all devices */
#videosubstitute{display:none;width:auto;height:100%;}

html, body {
    height: 100%;
    margin: 0;
}
#fullScreenDiv{
    /*width:100%;*/
    /*height: 70vh;*/
    width: auto;
    padding:0!important;
    margin: 0!important;
    background-color: #FCE321;
    position: relative;
    z-index: -1;
}
#video{    
    width: 100vw; 
    height: auto;
    object-fit: cover;
    left: 0px;
    top: 0px;
    z-index: 1;
    display: block;
}

@media only screen and (min-width : 992px) {
    #video{display:block;}
    #videosubstitute{display:none}
}