body {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-family: Arial, sans-serif;
}

#board {
    display: grid;
    grid-template-columns: repeat(7, 70px);
    grid-template-rows: repeat(6, 70px);
    gap: 5px;
    margin: 20px;
}

.cell {
    width: 70px;
    height: 70px;
    background-color: lightgray;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.red {
    background-color: red;
}

.yellow {
    background-color: yellow;
}

button {
    margin-top: 20px;
}