So i’m trying to reproduce the layout below using flexbox + grid (ignore the “moving windows” part), then I got stuck on the menu. I first tried to make a 3cols x 2rows grid, with the topbar occupying all the columns and the menu being one of the cells. But when the menu closes, the “desktop” moves to the left cell, leaving an empty space in the last cell.
What should I do in this case? Is there a better alternative than using a 3×2 grid?