.full-screen-container {
    position: fixed;
    top: 0px;
    left: 0px;
    overflow: hidden;
    transform-origin: left top;
    z-index: 999;
}

@media (max-width: 992px) {
    .full-screen-container {
        position: relative;
        top: 0px;
        left: 0px;
        overflow: visible;
        transform-origin: left top;
        z-index: auto;
    }
}