body{margin:0}#media-controls{position:absolute;top:0;right:0;background:#00000080;color:#fff;padding:8px;font:12px/1.2 Arial,sans-serif;display:flex;flex-direction:column;align-items:flex-start}#video-upload,#audio-upload,#lrc-upload{max-width:200px}input[type=range]{height:2px;background:#fff3}