.video{width:100%;aspect-ratio:9/16;display:block}.play-button{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background-color:rgba(0,0,0,.7);color:#fff;border:none;border-radius:50%;width:60px;height:60px;font-size:24px;cursor:pointer;align-items:center;justify-content:center}