.waterfall-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 0 20px;
}

.waterfall-column {
    width: 25%;
    padding: 2px;
    box-sizing: border-box;
}

.waterfall-item {
    margin-bottom: 10px;
    background-color: #f8f8f8;
    padding: 10px;
}