This is a fairly simple way to add a thick underline to your elements.
We use here 2 interesting tricks:
Whenever possible, use Class Names to target the elements in your interaction. You never know when you'll need to duplicate and use it somewhere else...
A clonable for creating an Alphabetical glossary
Change Webflow's Slider to act as a "regular" grid block on desktop, but go back to Slider on Tablet and smaller screens.