#game-board {
    display: grid;
    grid-template-columns: repeat(8, 50px);
    grid-template-rows: repeat(8, 50px);
    gap: 2px;
    background-color: #ccc;
    width: fit-content;
    margin: 50px auto;
}

.cell {
    width: 50px;
    height: 50px;
    background-color: white;
}

/* 示例元素颜色，可根据需要扩展 */
.red {
    background-color: red;
}

.blue {
    background-color: blue;
}

.green {
    background-color: green;
}

.yellow {
    background-color: yellow;
}