.grid-cell {
    width: 15px;
    height: 15px;
    border: 1px solid #eee;
    transition: background-color 0.1s ease;
}

@media (max-width: 768px) {
    .grid-cell {
        width: 10px;
        height: 10px;
    }
}

.grid-cell.black {
    background-color: #1a1a1a;
}

.grid-cell.ant {
    background-color: #ef4444;
}

.grid-container {
    display: inline-block;
    border: 2px solid #333;
    background-color: white;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    border-radius: 4px;
    overflow: auto;
    max-width: 100%;
}