body{font-family:sans-serif;margin:0;padding:0;background:#0f0f0f;color:#fff}input,button{display:block;margin-top:.5rem;padding:.5rem}img{max-width:100%;height:auto}.grid{display:grid;gap:1rem}.border{border:1px solid #333;padding:.5rem}.video{width:100%;max-width:720px}