.masonry {
    position: relative;
    width: 800px;
    /* Adjust based on container size or make it responsive */
    margin: 20px auto;
}

.item {
    position: absolute;
    width: 180px;
    /* Width of each column */
    margin: 10px;
    box-sizing: border-box;
    border: 1px solid #ccc;
    border-radius: 8px;
    background: #f9f9f9;
}

.item img {
    width: 100%;
    height: auto;
    display: block;
}