Use base stylesheet for basic components

[dawsonbooth]

It shouldn't be necessary to add styles for rather fundamental components like inputs, modals, cards, and loading indicators. We should find a way to use something like PicoCSS as a base and make any additions using Tailwind.

Best case scenario, we can use a Tailwind theme in addition to the CSS base so there's no need to "reset" any Pico styles to a Tailwind default.