docs: example with CSS modules and pure CSS

[alexander-akait]

This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

update docs

Breaking Changes

No

Additional Info

No

[codecov]

Codecov Report

Merging #983 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #983   +/-   ##
=======================================
  Coverage   98.34%   98.34%           
=======================================
  Files          10       10           
  Lines         424      424           
  Branches      125      125           
=======================================
  Hits          417      417           
  Misses          7        7

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