JS-less carousel with native (CSS-)elements

[NilsL]

According to MDN it is possible to create a carousel just with HTML and CSS. Unfortunately this is not possible in Firefox. Since CSS gets more and more powerful - and I urge my developers to use more CSS and less JS - it would be wonderful to create these kind of carousels. For that Firefox needs support for all the mentioned pseudo-elements from the MDN article.

[Jon]

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.

[dholbert]

Yup, this set of next-gen carousel features (::scroll-marker etc, from the css-overflow-5 spec) is not yet supported in either Firefox or Safari yet (see compat table).

Right now we don't have a concrete timeline for when we'll implement this particular feature; in our last poll of web developer sentiment on new CSS features, this ranked lower than a lot of others, so it's not at the top of our priorities right now.  The tracking bug is https://bugzilla.mozilla.org/show_bug.cgi?id=1941440 if you want a place to follow along, though! (For now, most of the activity on that bug is just associating test-failures that Chromium folks have added for this feature, which trivially fail in browsers that don't support it yet.)