body {
}


.popup {
    position: fixed;
    z-index: 2;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    opacity: 0;
    visibility: hidden;
    transition: .3s ease;
}

.show-popup .popup {
    opacity: 1;
    visibility: visible;
}

.popup > iframe {
    position: absolute;
    top: 50px;
    left: 50%;
    margin-left: -280px;
}

.videoContainer {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%;
}

    .videoContainer .video {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
    }