[Solved]How to make Grid Layout group Cell Size X Auto expand

I am trying to make a list of UI elements. I want there to always be 2 columns and a potentially infinite number of rows. I want each cell to expand their x size constraint to completely fill the allocated space without any empty space on the sides. How can I achieve this?

This is what I want it to look like:
View attachment 213633
This is what I get upon changing resolutions:
View attachment 213634