Fix/prod styling bug

[clairefro]

Addresses a docusaurus bug that was causing some styles to not render in production.

Problem and solution was discovered in this issue comment at docusaurus

Basically, any selectors in custom.css that include long docusaurus module names should instead use substring selectors (apprarently the modules are rendered differently in production)

example:

/* NO! This works in development but breaks in production */ 
.docTitle_node_modules-\@docusaurus-theme-classic-lib-next-theme-DocItem- {
  font-size: 2rem !important;
}

/* YES! This works in all environments */
[class^='docTitle'] {
  font-size: 2rem !important;
}

Now The codeblock and font styles are rendering in a local production bundle + serve

yarn build 
yarn serve

[cannikin]

Nice! I'll still have to take another pass at some code syntax like the comments and see if the contrast is still acceptable, but this at least restores the initial changes.

[clairefro]

awesome, I am going to merge this so there is a clean working basis for those things