Change font weight based on scroll position

Hi all,

I’m trying to achieve an effect similar to this:

You can see how far I’ve gotten here:

I’m wondering a) how to make Step 1, 2, 3, etc bold based on what image is visible and b) how to get the small scroll line beside the text.

Any help on this much appreciated

I’m pretty sure Webflow doesn’t natively supports that. I would recommend you using this: