.grid-container {
    display: grid;
    grid-template-columns: repeat(24, 1fr);
    gap: 10px;
    padding: 20px;
}

.grid-item {
    background: #f4f4f4;
    padding: 10px;
    text-align: center;
    border: 1px solid #ddd;
    cursor: grab;
}

.grid-item img {
    max-width: 100%;
    height: auto;
}

.col-span-1 { grid-column: span 1; }
.col-span-2 { grid-column: span 2; }
.col-span-3 { grid-column: span 3; }
.col-span-4 { grid-column: span 4; }
.col-span-6 { grid-column: span 6; }
.col-span-12 { grid-column: span 12; }
.col-span-24 { grid-column: span 24; }