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Core Committers: Use this line as a base for the props when committing in SVN:

Props westonruter.

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Cascade when should_load_separate_core_block_assets is disabled:

1. HEAD > STYLE#wp-img-auto-sizes-contain-inline-css
2. HEAD > STYLE#wp-emoji-styles-inline-css
3. HEAD > LINK#wp-block-library-css
4. HEAD > STYLE#classic-theme-styles-inline-css
5. HEAD > STYLE#global-styles-inline-css
6. HEAD > LINK#twentytwenty-style-css
7. HEAD > STYLE#twentytwenty-style-inline-css
8. HEAD > LINK#twentytwenty-fonts-css
9. HEAD > LINK#twentytwenty-print-style-css
10. HEAD > STYLE#wp-custom-css
11. BODY > STYLE#block-style-variation-styles-inline-css
12. BODY > STYLE#core-block-supports-inline-css
13. BODY > STYLE#core-block-supports-duotone-inline-css

And when should_load_separate_core_block_assets is enabled:

1. HEAD > STYLE#wp-img-auto-sizes-contain-inline-css
2. HEAD > STYLE#wp-emoji-styles-inline-css
3. HEAD > STYLE#wp-block-library-inline-css
4. HEAD > STYLE#wp-block-archives-inline-css
5. HEAD > STYLE#wp-block-button-inline-css
6. HEAD > STYLE#wp-block-categories-inline-css
7. HEAD > STYLE#wp-block-heading-inline-css
8. HEAD > STYLE#wp-block-image-inline-css
9. HEAD > STYLE#wp-block-latest-comments-inline-css
10. HEAD > STYLE#wp-block-latest-posts-inline-css
11. HEAD > STYLE#wp-block-buttons-inline-css
12. HEAD > STYLE#wp-block-search-inline-css
13. HEAD > STYLE#wp-block-group-inline-css
14. HEAD > STYLE#wp-block-paragraph-inline-css
15. HEAD > STYLE#classic-theme-styles-inline-css
16. HEAD > STYLE#global-styles-inline-css
17. HEAD > LINK#twentytwenty-style-css
18. HEAD > STYLE#twentytwenty-style-inline-css
19. HEAD > LINK#twentytwenty-fonts-css
20. HEAD > LINK#twentytwenty-print-style-css
21. HEAD > STYLE#wp-custom-css
22. HEAD > STYLE#block-style-variation-styles-inline-css
23. HEAD > STYLE#core-block-supports-inline-css
24. HEAD > STYLE#core-block-supports-duotone-inline-css

When the block styles are grouped under the related HEAD > LINK#wp-block-library-css entry, the order is:

1. HEAD > STYLE#wp-img-auto-sizes-contain-inline-css
2. HEAD > STYLE#wp-emoji-styles-inline-css
3. HEAD > LINK#wp-block-library-css
4. HEAD > STYLE#classic-theme-styles-inline-css
5. HEAD > STYLE#global-styles-inline-css
6. HEAD > LINK#twentytwenty-style-css
7. HEAD > STYLE#twentytwenty-style-inline-css
8. HEAD > LINK#twentytwenty-fonts-css
9. HEAD > LINK#twentytwenty-print-style-css
10. HEAD > STYLE#wp-custom-css
11. HEAD > STYLE#block-style-variation-styles-inline-css
12. HEAD > STYLE#core-block-supports-inline-css
13. HEAD > STYLE#core-block-supports-duotone-inline-css

The cascade is the same, with the difference being that block-style-variation-styles, core-block-supports, and core-block-supports-duotone are located in HEAD as opposed to BODY. This is good as it prevents FOUC.

Test using WordPress Playground

The changes in this pull request can previewed and tested using a WordPress Playground instance.

WordPress Playground is an experimental project that creates a full WordPress instance entirely within the browser.

Some things to be aware of

• The Plugin and Theme Directories cannot be accessed within Playground.
• All changes will be lost when closing a tab with a Playground instance.
• All changes will be lost when refreshing the page.
• A fresh instance is created each time the link below is clicked.
• Every time this pull request is updated, a new ZIP file containing all changes is created. If changes are not reflected in the Playground instance,
  it's possible that the most recent build failed, or has not completed. Check the list of workflow runs to be sure.

For more details about these limitations and more, check out the Limitations page in the WordPress Playground documentation.

Test this pull request with WordPress Playground.