Correct The 2 Columns Layout On Mobile So That The Size Adjusts Based On Screen Size

[Yusa1]

Hello,

I'm trying to correct the 2 columns layout on mobile so that the size adjusts based on screen size

Here an example of what i'm referring too down below on the video.  URL - https://avokitchen.com/

PROBLEM - https://share.getcloudapp.com/9Zuyx4wN

Any help I will gladly appreciated!