fix: Add className & don't overwrite default

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 99.35%. Comparing base (2a94bd6) to head (038ce67). Report is 2 commits behind head on beta.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## beta #453 +/- ## ======================================= Coverage 99.35% 99.35% ======================================= Files 88 88 Lines 1234 1234 Branches 179 179 ======================================= Hits 1226 1226 Misses 2 2 Partials 6 6 ```

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[iu-deployer]

:tada: This PR is included in version 2.0.0-beta.8 :tada:

The release is available on:

• npm package (@beta dist-tag)
• GitHub release

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