Good morning!
I haven't done that SPECIFICALLY, but, if you use a combination of collapsible content, anchor tags, and attachments that open in a new window, you can mimic all those behaviors.
I've created collapsible content using the following code:
<details>
<summary>HEADER GOES HERE</summary>
<p>content content content</p> (You can do tables, anchor tags, just code as normal)
</details>
And I've done anchor tags all over the place - to create a table of contents at the top and to go from one article to the specific section of a different article. You can also put anchor tags in a knowledge block and you can link to it from wherever (same article or different article) and it will work when published.
I haven't seen a need for tabs within the same article yet. I just attach docs (FAQs, spreadsheets, etc.) and have them either open in a new internet browser tab or have them download. (I tend to have things that are meant to be read only or be a resource open in a new tab. Forms, spreadsheets, anything that has to be filled out, saved, used, and sent somewhere - those things I code to download automatically to save a step for the user.)
I find this coding MUCH EASIER to do, since I'm working mostly with people who are not super familiar with HTML - including myself. But these techniques are easy to use and to combine.
I hope this helps. PLease feel free to reply if you have follow-up questions.
