.masonry-grid-container{
    display: block;
}

.masonry-grid {
    display: flex;
    flex-direction: row;
}

.masonry-grid-item {
    margin: 0 auto;
    width: 100%;
    border-radius: 5px;
}

.box2 .masonry-grid-item {
    width: 100%;
}

.masonry-grid .sub {
    display: flex;
    flex-direction: column;
    margin: 0;
}