CMS grid dropdown container width

Hello all.

Right now I configured a CMS grid with Auto columns so that the grid is responsive through different breakpoints. Within each of the grid items, I added a dropdown to display more info on-click.

While I got the accordion-like function working, my issue now is that I want the content to fill the width of a container further up in the hierarchy. For example, I have 3-4 grid elements (which contain dropdowns) spanning across the horizontal axis, and I want the content from each dropdown to fill the width of the container which holds all of these elements. I’ve included my read-only link. It’s on the “About” page.

Here is my read-only link: Webflow - Website 09-2019