Refactor and clean up the code

[obulat]

Partial fix for #98

Description

This PR cleans up components and styles to prepare the repo for outside contributors.

Other information

Checklist:

• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the master branch of the repository.
• My commit messages follow best practices.
• I added tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no
  visible errors.

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