Fix layout issues in theme configuration

[hichemfantar]

Why:

Adjust layout settings in the theme configuration to improve the overall appearance and functionality.

What's being changed (if available, include any code snippets, screenshots, or gifs):

Check off the following:

• I have reviewed my changes in staging, available via the View
  deployment link in this PR's timeline (this link will be available after
  opening the PR).

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Latest commit: aa09f2e

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