For simpler projects I always do simple resets like resetting padding, border, box-sizing before doing anything.. for more complex layouts I would mostly bring in some extended css reset rules ;)
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I am not even sure if not normalizing at all is safe in the latest browsers...
normalize.cssis more safe for Markdown as well, and I think it is much less invasive and opinionated than classless CSS.CSS resets might be better and smaller, as well as make CSS more manageable, if you don't work with Markdown.
I am currently not sure if I need normalize.css or CSS resets in shadow DOMs.
For simpler projects I always do simple resets like resetting padding, border, box-sizing before doing anything.. for more complex layouts I would mostly bring in some extended css reset rules ;)