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Block Editor (Gutenberg)

Sage includes two assets that are enqueued when working with the WordPress block editor, also known as Gutenberg:

  • resources/scripts/editor.js
  • resources/styles/editor.css

Any styles added to editor.css will only be applied to the block editor.

Adding app.css to the editor

If you wish to include the app.css stylesheet to the block editor, you can do so by using the add_editor_style() function:

add_action('after_setup_theme', function () {

Your CSS will be added as inlined styles and all selectors will be prefixed with .editor-styles-wrapper, with the exception of any styles targeting the body element.

theme.json generator

Sage includes a theme.json file for configuring the WordPress editor. It's generated during asset builds automatically and accounts for settings from the Tailwind config (tailwind.config.cjs).

theme.json spec

Reference the theme.json documentation for the full specification.

Due to Sage including a theme.json file, this means trying to use add_theme_support() to configure the editor will not work.

In Sage's Bud config (bud.config.js), there a section for generating theme.json. This is where you'll want to make any changes to your theme.json file.

Tailwind CSS colors, font families, and sizes are generated on the theme build for theme.json. See the Sage docs on Tailwind CSS for more information.

# Editor styling workflows


bud-wp-editor-query can be used to extract editor styles by using @media (wp-editor).


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