body{font-family:Arial,sans-serif;margin:0;background:#f6f7fb}.navbar{display:flex;justify-content:space-between;padding:12px 20px;background:#1f2937;color:#fff}.navbar a{color:#fff;margin-left:15px;text-decoration:none}.page{padding:20px;max-width:600px;margin:20px auto auto;background:#fff;border-radius:6px}input,button,select{width:100%;padding:8px;margin-top:6px}button{background:#2563eb;color:#fff;border:none;cursor:pointer}