math-css | Easy way to represent math by a few lines of HTML via CSS | Math library

To the best of my knowledge, bullets (and many other stylistic elements) can only be changed in the header of the slideshow that is knit from the "CSS" and .Rmd ioslides files.

(N.b.: for ease, I'll refer to the "CSS" file as style.html, the .Rmd file first created in RStudio as draft.Rmd, and the final slideshow knit from those two files as slideshow.html. Not that the names of all of these files can be changed by the user.)

My first clue (noted early on and then more or less ignore) was that the "CSS" file is not a cascading style sheet per se. Although by default named "style," the extension is correctly ".html"---not ".css": It's in fact an .html file---although one that contains elements relegated to headers.

ioslides takes the information in the style.html file and integrates it into different parts of the final slideshow file that is creates from the style.html and draft.Rmd file. The formatting elements for the slideshow.html are all in the header of that file. I.e., there is no separate .css file that slideshow.html accesses for styles.

This means that some (arguably many) stylistic elements can be modified within the style.html file but any other elements must be modified within the final slideshow.html.

Of course, changing elements in style.html is easy and allows for quick re-knits to test those changes. It also means that that style.html file can be reused with other .Rmd files for consistent formatting.

Any other stylistic elements must be changed in the slideshow.html that is (re)knit after any changes to either the style.html or 'draft.Rmd` file. This can be a simple search/replace operation, so far from impossible---just less obvious or automated.

Searching through the header generated in the slideshow.html file, I found: