Can't resize grid

Hello,

I’m practicing Webflow following the web design course. I’m trying to figure out my grid, I have followed exactly what’s in the tutorial, but I can’t resize my grid overall. Every time I set the height of the grid to a certain px, the images inside the grid don’t follow that size somehow.

Here is a screen shot of it.

Here is my site Read-Only: Webflow - Devina's Portfolio

Appreciate your help!