body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f4f4f4;
}

.board {
    display: grid;
    grid-template-rows: repeat(3, 100px);
    gap: 5px;
}

.row {
    display: flex;
}

.cell {
    width: 100px;
    height: 100px;
    border: 1px solid #333;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    cursor: pointer;
}

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