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by ry_ry 2558 days ago
I'm taking about classes with an enforced 1:1 relationship with a DOM node, via a unique computed className.

Since there is no requirement for a cascade for this, you've effectively made an ID out of a class.

All the reasons styling off IDs isn't ideal in the traditional CSS metaphor still apply, specificity, verbose stylesheets, etc. But now it's defined as a class too.