.video-container { 
    position: relative;
}

    .video-container video {
        width: 100%;
        height: 100%;
        position: absolute;
        object-fit: cover;
        z-index: 0;
        margin-top: 0px;
        margin-left: 0px;
    }
    /* Just styling the content of the div, the *magic* in the previous rules */
    .video-container .container {
        z-index: 1;
        position: relative;
        text-align: center;
        color: #dc0000;
        
    }