html,body{zoom:100%;margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,Liberation Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji;font-size:14px}#loading{text-align:center;background:#ffffffbf;width:100vw;height:100vh;position:fixed;top:0;left:0}#loading img{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}#video-container{height:100vh;display:inline-block}#video-container video{pointer-events:none;width:100vw;max-height:80vh;display:block}#video-controls-container{text-align:center}#subject-id-container,#intro-container,#experiment-ended-container{width:calc(100vw - 16px);padding:8px}#subject-id-container input{border:1px solid #000;margin-left:8px;padding:4px}#video-controls-container button{color:#fff;cursor:pointer;background:#000;border:none;margin:8px auto;padding:6px 10px;font-size:14px;display:block}#video-controls-container button:disabled{color:#ddd;cursor:default;background:#777}.hidden{display:none!important}video::-webkit-media-controls{opacity:0;display:none!important}video::-webkit-media-controls-start-playback-button{display:none!important}