... you mean embedded HTML in a markdown file? that's nothing new.

Vinnl · on March 5, 2020

Here's the MDN page some of the sibling comments might want to see: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/de...

remi · on March 5, 2020

The “new” thing (if you didn’t know it before) is that GitHub applies a collapse/expand behavior to <details> elements.

cfv · on March 5, 2020

This is an actual HTML tag, not a github thing

https://jsbin.com/timafew/edit?html,output

torgoguys · on March 5, 2020

Isn't that the default behavior of <details> in html documents? Am I missing something?

chadlavi · on March 5, 2020

^ this is what I mean, yeah. Isn't that the expected behavior?

redbergy · on March 5, 2020

Your comment is accurate but I think its the fact that GitHub styles it in that way. I do wish it was possible to use markdown-types of elements in this way so that it could fallback on non-GitHub rendered web pages, or still look good in a text editor vs. HTML tags all over the place.

Maybe something like

^ Header

^^^

Collapsed

^^^

Similar to code blocks with the ``` syntax. I dunno.

oefrha · on March 5, 2020

> its the fact that GitHub styles it in that way

GitHub hardly styles it at all. It applies a margin-top on top of what normalize.css does. It's 99% your browser's default style sheet at work.

recursive · on March 5, 2020

First we couldn't tell the difference between git and github. Now we can't tell the difference between browsers and github.