body {
  font-family: 'Segoe UI', sans-serif;
  background: #f5f7fa;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  text-align: center;
}

h1 {
  margin-bottom: 20px;
  color: #333;
}

.board {
  display: grid;
  grid-template-columns: repeat(3, 100px);
  grid-gap: 10px;
  margin-bottom: 20px;
}

.cell {
  width: 100px;
  height: 100px;
  background-color: #fff;
  border: 2px solid #ccc;
  font-size: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.cell.x {
  color: #007bff;
}

.cell.o {
  color: #28a745;
}

.message {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: #333;
}

button {
  padding: 10px 20px;
  font-size: 1rem;
  background-color: #007bff;
  border: none;
  border-radius: 5px;
  color: white;
  cursor: pointer;
}
button:hover {
  background-color: #0056b3;
}