Parse and move RTE external CSS to typo3temp folder
have you ever changed an own CSS file for RTE and needed to clear your browser cache? That is why the CSS file is included directly from the original folder.
I think it is wiser to parse the CSS file and move it to the typo3temp folder so that it is deleted when the system cache is cleared.
RTE.default.contentCSS = EXT:website/Resources/Public/Css/rte.css
will be included directly.
Better (with hash):