.tiles{display:grid;grid-template-columns:repeat(6, 1fr);grid-auto-flow:row dense;grid-gap:2rem}.tiles-item{background:grey}.tiles-item.mod-full{grid-column:span 6}.tiles-item.mod-two-thirds{grid-column:span 4}.tiles-item.mod-half{grid-column:span 3}.tiles-item.mod-one-third{grid-column:span 2}