#promo-window {
    position: relative;
    width: min(90vw, 900px);
    background: #000;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,.5);
}

#promo-window video {
    width: 100%;
    height: auto;
    display: block;
}

#promo-close {
    position: absolute;
    right: 14px;
    top: 14px;
    z-index: 2;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,.9);
    color:#000;
    font-size: 24px;
    line-height: 40px;
    cursor:pointer;
}