*{margin:0;padding:0;box-sizing:border-box}:root{--main-color: #1e1e1e;--secondary-color: orange}body{font-family:Noto Sans,sans-serif;background:#eee}a{color:inherit;text-decoration:none}.btn{padding:10px 15px;margin:10px;border:none;border-radius:5px;background:var(--main-color);color:#fff;font-weight:700;cursor:pointer}.btn:hover{color:var(--secondary-color);transform:scale(1.1)}.btn:disabled{background:#555;color:#fff;cursor:not-allowed;transform:none}