body{font-family:Arial,Helvetica,sans-serif;background:#f4f4f8;color:#222}
.container{max-width:700px;margin:40px auto;padding:20px;background:#fff;border-radius:8px;box-shadow:0 2px 6px rgba(0,0,0,0.08)}
h1{margin-top:0}
.game-board{display:grid;grid-template-columns:repeat(3,80px);gap:8px}
.cell{width:80px;height:80px;display:flex;align-items:center;justify-content:center;background:#eee;font-size:28px;cursor:pointer}
.button{display:inline-block;padding:8px 12px;background:#2979ff;color:#fff;border-radius:6px;text-decoration:none}
.form-row{margin:8px 0}