#video-popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: -1;
    opacity: 0;
    transition: all 0.3s linear;
}
#video-popup.opened {
    z-index: 1000;
    opacity: 1;
}

#video-popup .close {
    position: fixed;
    top: 4rem;
    right: 4rem;
    color: #fff;
    font-size: 4rem;
    font-weight: bold;
    cursor: pointer;
    z-index: 1001;
}

#video-popup .container {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1001;
    width: 50%;
    padding-bottom: 21%;
    height: 0;
    overflow: hidden;
}

#video-popup .container iframe {
    width: 100%;
    height: 100%;
    position: absolute;
}

@media screen and (max-width: 1023px) {
    #video-popup .container {
        width: 70%;
        padding-bottom: 30%;
    }
}

@media screen and (max-width: 425px) {
    #video-popup .container {
        width: 90%;
        padding-bottom: 38%;
    }
}