So as you can see in the video, I’ve got a repeating group (with dynamic content) set to horizontal scrolling. I need it to dynamically grow horizontally. At the moment the group just scrolls within a fixed width.
The “responsiveness” of your repeating group is relative to its container. If you want the repeating group to fill the container, you will need to either a) reduce the parent element size to be the exact size of the repeating group or b) increase the size of the repeating group so that it covers the entire container width.