.lightbox
{
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    
    display: block;
    width: 100%;
    height: 100%;
    
    background-color: rgba(0, 0, 0, 0.8);
    
    z-index: 2;
}

.lightbox.hidden
{
    display: none;
}

.lightbox > *
{
    position: relative;

    display: block;

    top: 50%;
    left: 50%;

    -ms-transform: translate(-50%, -50%);
    -moz-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}

.lightbox > .lghBox_youtube-default
{
    width: calc(100% - 70px);
    height: auto;

    max-width: 1024px; /* 1024 + 60 */
    max-height: calc(100% - 70px); /* 576 + 60 */

    aspect-ratio: 16 / 9;
}

.lightbox > .lghBox_youtube-default > iframe
{
    position: absolute;

    top: 0;
    left: 0;

    width: 100%;
    height: 100%;

    margin: 0;
    padding: 0;
}

.lightbox button.exit
{
    position: absolute;
    top: -30px;
    right: -30px;
    
    display: block;
    cursor: pointer;
    padding: 0;
    margin: 0;
    
    background-color: transparent;
    border: 0;
}