.game{text-align:center;margin-top:50px}.board{display:grid;grid-template-columns:repeat(3,100px);grid-template-rows:repeat(3,100px);margin:20px auto;max-width:320px;justify-content:center}.square{width:100px;height:100px;font-size:36px;font-weight:700;background-color:#f2f2f2;border:1px solid #333;cursor:pointer;display:flex;justify-content:center;align-items:center;transition:background-color .3s}.square:hover{background-color:#e0e0e0}.reset{padding:10px 20px;font-size:18px;cursor:pointer;border:1px;border-radius:15px}.reset:hover{background-color:#ddd}