This layout is used in the Dataset Display template.
The full box layout is fluid and occupies 100% of the container's width across the different breakpoints.
Note, however, that the lateral space is removed from the layout on displays smaller than 576 px.
The card layout adapts 100% to the width of the container adjusting the size of the cards and the number of cards per row to the different viewport sizes. This is a layout that we can find in templates like Dataset Display.