.vertical-video-container{position:relative;width:100%;max-width:420px;margin:0 auto;aspect-ratio:9 / 16;overflow:hidden;border-radius:24px;box-shadow:0 15px 40px rgba(0,0,0,0.15)}.vertical-video-container iframe{width:100%;height:100%;position:absolute;top:0;left:0}