I’m trying to create these blocks of texts with a grid, the first two work but the 3rd and 4th grids are overlapping. I have the grid margins set to 20 top and bottom and when editing the page it looks correct but when published they overlap.
when you add a Grid Block it automatically adds an individual Container Block for each grid item, and you can add as many grid items you like and it will automatically create new rows if required see here: