The TYPO3 CMS is extremely powerful and infinitely configurable and customizable. These are great features in a CMS when your client asks the question "Can we do...on our site?" and you can always say yes. But sometimes the ability to customize the CMS anyway you want leads to some obscurity on the 'how' side of things. I've had cases when I know the customizing I want to do is possible, but finding out exactly how to do it is the problem. As with many OpenSource projects, the documentation although being adequate is often pretty thin on the 'how-to' portion. This can be compounded by breaking changes between major versions.
Recently I was the lead on a TYPO3 site migration from version 7 to version 9. Once the testing was done, scripts written and the migration completed there were some outliers as I expected. One of these outliers was related to migrating from the core layout extension css_styled_content to the newer extension…
