How would I go about make a Grid responsive?

Hi, I wanted to make my website responsive. It works fine on desktop and tablet, but the grids are impossible to fit on a single screen in mobile, and I’m not sure what to do about this. How would go about make two elements in the grid shrink into a single column?

Thank you so much!


Here is my site Read-Only: https://preview.webflow.com/preview/monica-lin?utm_medium=preview_link&utm_source=dashboard&utm_content=monica-lin&preview=d19e7212f842a2f1c05de7f61892841c&mode=preview