*{box-sizing:border-box}body{font-family:sans-serif;margin:20px;color:#00008b;padding:0;background:#f5f5f5}.square{width:35px;height:35px;border:1px solid gray;box-shadow:0 0 5px gray;background:#d3d3d3;font-size:1.2rem;font-weight:700;cursor:pointer}.board{display:flex;flex-wrap:wrap;width:105px;height:105px}.status{margin-bottom:10px}.game{display:flex}