Changing grid columns and rows depending on screen size

That shouldn’t matter. Setting a content on manual allows it to be moved to a specific grid cell. When set to Auto, the grid automatically adds the content in the first free cell.

I’ve found exactly what I want to achieve. It’s shown in the breakpoints tutorial. Here a 3x3 grid is modified to a smaller grid per smaller breakpoint. In the vid you see grid columns and rows immediately disappear when being being removed. I don’t get it why mine remain visible.