Explore if details/summary could be a simpler replacement for born-hidden knowls

[Alex-Jordan]

This is maybe a nothing burger, but this article shows how to use HTML details/summary elements to work like knowls:

https://css-tricks.com/how-to-animate-the-details-element-using-waapi/

I know that our knowls have complications like MathJax you want to render after it opens, and other things. But this may be worth looking into. If it worked, maybe code for born-hidden knowls could be a lot simpler.