Site sets
New in version 13.1
Site sets have been added to the extension typo3/cms-fluid-styled-content . See Include one of the available site sets on how to use them.
The extension typo3/cms-fluid-styled-content offers two site sets that can be included via the Site module or required by your site package's site set.
The settings provided by these sets can be adjusted in the Settings editor.
"Fluid Styled Content"
The site set "Fluid Styled Content" includes all TypoScript required to
display the content elements provided by fluid_.
"Fluid Styled Content CSS"
This site set extends the "Fluid Styled Content" site set with default CSS.