> I get the nav bar scenario, but I think I find the quest for "CSS purity" where any design, no matter how dynamic, can be expressed without Javascript seems a

> I get the nav bar scenario, but I think I find the quest for "CSS purity" where any design, no matter how dynamic, can be expressed without Javascript seems a bit silly. I have no problem with it, I just also don't think it's quite as noble as some seem to think. I think you're missing the point. Adding functionality to CSS makes is mostly about separation of concerns and making desired features accessible to a wider audience than just JavaScript programmers. And while a good programmer can do a lot with JavaScript, all of the machinery for layout—flex box, grid, container queries—is in CSS, so it makes sense to build on that.