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FR not working in grid- following the Hayes Valley Design Tutorial

I am following the Webflow university “The Freelancer’s Journey” and something is not working with the Home Hero grid section.
There are two columns and two rows.
Every column and row is set to 1FR
The picture was dragged across all 4 sections of the grid
The div block containing the text and buttons is lower right.

BUT while both columns are the same width as would be expected, the top row is 1/5 the size of the bottom row. This is what it looks like, both in editor and in preview. I ignored it until I got to the break point part of the tutorial, and this problem gets worse in tablet view.

My read only link

Here is my site Read-Only:
(how to share your site Read-Only link)

I fixed it by going in and playing with the minimum values of all the columns and rows. I am not sure why this fixed the problem, or precisely where I went wrong in the tutorial.