In general, the subject matter described in this disclosure can be embodied in methods, systems, and computer-readable devices for presenting, by a computing system, multiple cells that are arranged in a multi-dimensional grid of cells. The computing system may display content in a first cell without displaying the content in a second cell. The computing system may present a first user interface element that is to expand the display of the content from the first cell to both the first cell and the second cell. The computing system may receive first user input that selects the first user interface element. The computing system may display, in response to receiving the first user input, the content in the first cell and the second cell.