Additional CSS for Twenty Twenty Three Theme

For the Theme ‘Twenty Twenty Three’, we can add CSS in two ways.


  • we need to add customize.php at the WordPress dashboard URL.
  • At the left sidebar, select Additional CSS.
  • Add the CSS code and Click on Publish.

2. Header Templates

  • Navigate to ‘Appearance’ –> ‘Editor
  • Select “Site” and at the Header, Click on add block and add a custom HTML.
  • Add the CSS code like the below image.
  • Click on Save.

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