body {
  text-align: center;
  font-family: Arial, sans-serif;
  background: linear-gradient(135deg, #667eea, #764ba2);
  min-height: 100vh;
  color: white;
}

h1 {
  margin-top: 40px;
}

.board {
  display: grid;
  grid-template-columns: repeat(3, 80px);
  gap: 10px;
  justify-content: center;
  margin: 30px auto;
}

button {
  width: 80px;
  height: 80px;
  font-size: 32px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  background: white;
  color: #333;
}

button:hover {
  background: #ffd166;
}

.reset {
  width: auto;
  padding: 10px 20px;
  font-size: 16px;
  margin-top: 10px;
}