Rewrite CSS to SCSS syntax

[bLangved]

What this issue is about:

All styling was written in CSS originally. Project now uses SCSS through SASS, and should be written like that.

To-do's

• [x] Rewrite code to be nested
• [x] Lot of classnames in the code are IMO too complex, like this one:
• Consider renaming classnames to be simpler, more describing. SCSS can easily target element tags like < h2 > instead of "pokemonContainer-title". If we don't need a classname, get rid of it. Cleans up the html aswell
• [x] Since we are using bootstrap, a lot of classes are allready predefined (like .card). Don't just change ".pokeCard" to .card. That can complicate things

Relevant project paths:

/src/scss/

[bLangved]

Allready done some of the .pokeCard stuff, but they needs to be rewritten. Could be way smoother, and cards needs some tweaks overall.