body {
  font-family: Arial, sans-serif;
  text-align: center;
  padding: 30px;
  background-color: #f9f9f9;
}

.board {
  display: grid;
  grid-template-columns: repeat(3, 100px);
  grid-gap: 5px;
  justify-content: center;
  margin: 20px auto;
}

.cell {
  width: 100px;
  height: 100px;
  background-color: white;
  border: 2px solid #333;
  font-size: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.cell:hover {
  background-color: #eee;
}

button {
  padding: 10px 20px;
  font-size: 16px;
}
.cell.x {
  color: red;
}

.cell.o {
  color: blue;
}