Problem with advanced mode grid

Hi!
I’ve any issue on the advanced mode grid.
back container goes further than the grid I’ve applied.
And I can’t erase that empty space. If I try to reduce the height size, that space stays and adapt its size with rest of the grid.
Does anyone know a solution to fix that problem?

thanks!

Hi, Have you checked the ‘Sections’ minimum height, this may happens if it’s greater than the grid height?

Yes, you’re right. I just put height on auto and it fixed the problem.
Thanks a lot for your help!