#ad-content-screen {
    width: 100%;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;

    display: none;
    align-items: center;
    justify-content: center;
    background-color: #000000;
    overflow: hidden;
    z-index: 9999;
}

#content-container {
    position: relative;
    max-width: 100%;
    max-height: 100%;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.content-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.25s ease-out;
}

.content-layer.current-layer {
    opacity: 1;
}

.content-layer.next-layer {
    opacity: 0;
    z-index: 2;
}

#content-container img,
#content-container video {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}