Safari Technology Preview Release 94 is now available for download for macOS Mojave and macOS Catalina. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS.
This release covers WebKit revisions 250329-250947.
CSS Shadow Parts
Added support for the ::part() pseudo element from CSS Shadow Parts (r250889,r250902, r250914, r250628, r250584, r250643, r250701,...