New Variations of Custom CSS in MoMA 6.2

The sticky position block support is added in 6.2. Right now it's featured on top level group blocks. There are still some UX considerations around sticky positioning, because it doesn't always stick if the surrounding element isn't tall enough to allow for sticking. The next one is that a lot of people waited for it: Custom CSS in the global styles. That's one part, but also you can have custom CSS for on a block level.