How to modify the collapsible content section.

[CreatorTim]

Hey guys, I need some help tweaking the "collapsible content" section on my site. For me, this is the FAQ section.

Here’s what it looks like on my store:

And here’s what I’d like:

1. I don’t want the headings inside the light gray containers to be bold or emphasized.
2. I want the corners of the light gray containers to be rounded to 5px.
3. I want all text, including the headings and the content inside the containers, to be black.
4. I want to disable the hover effect, so when I hover over the container or the container heading, the color doesn't change.

Basically, I want it to look exactly like this:

Here’s the link to my store: https://1049xn-ya.myshopify.com/products/editing-masterclass
(Just scroll down a little to find the section)

Here’s the link to the store as I want it to look: https://tomnoske.store/products/cinema-luts

(Just scroll down a little to find the section)

Thanks so much for your help!
Tim