Yeah, my approach is to create a kind of 'template' page where I place all the base elements I believe I'll use (headings, paragraphs, links etc.) and do all the initial styling there. Then you could create symbols for the different elements you may need (buttons, nav etc.) and drop them onto your normal pages.
It also helps as a bit of a visual reference to look at/edit if you need to.
I think an asset manager of some sort is something the devs are hopefully looking at implementing in the future. Which I imagine would enable us to maybe create global symbols of some kind that can be dropped into different projects. But there would no doubt be issues with clashing of class names etc. that would have to be considered while implementing this feature.
I'm sure they have something great in mind for the future. Fingers crossed.