Hi Aman - sorry for the slow reply.
I've attached an image showing four rows of grids. All four rows should match in width and positioning.
Grids 5 and 6 appear as expected, and as I want them to.
Grids 9 and 10 are not appearing as expected. Grid 9 is narrower than grid 5 above, and grid 10 is larger than grid 6 above. I was trying to find out what was causing these discrepancies when I did something to change grids 13 and 14 below. These should be the same widths as grids 5 and 6, but on a white background.
Grids 17 and 18 appear as expected.
I have no idea what I did to change grids 13 and 14, or why grids 9 and 10 are not appearing as I want them to.
Many thanks,
Ian