.video-thumbnail{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;opacity:.7;transition:opacity .3s}.play-button i{color:white;font-size:36px;margin-left:5px}.instructions{background:rgba(255,255,255,.1);border-radius:10px;padding:20px;margin-top:30px;max-width:800px;margin-left:auto;margin-right:auto}@media (max-width:768px){.video-title{font-size:1.2rem}}@media (max-width:480px){.play-button i{font-size:28px}}