In the current version of this library, the styles are part of `SplitComponent`. While this is great for a usability point of view (no need to include a separate style) it limits the flexibility. To offer a greater flexibility to developers using this library, it makes sense to publish the styles as separate SCSS files. Pros - makes it easier to extend/override the styles. - publishing it as SCSS allows for using variables, making it easy to tweak appearance. - we can provide with various styles out of the box (dark/light). Cons - Installation takes 1 more step as the user has to include the style. ## TODO - [ ] pull out styles into separate file, making sure it still works. - [ ] add SCSS variables for colors. - [ ] get rid of any `ng-deep`, where possible.