Why do the two sub-grids divided into two grids have spaces at both ends? The two grids obviously add up to twelve. How to modify it specifically? I am new to this. Figures 7 and 8 have spaces at both ends, but 9 and 10 do not.
If you want to nest, you have to add a row to the column, which is why you can’t do 7 and 8, but 9 and 10 are fine
You should check the code carefully, classmate. . .
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