Social Links Component

I would like feedback on styling, more specifically, setting up the styles in the best way to create a common reusable style. I wasn't sure in some cases whether the style should be global or local, and then the question of how local came up.

For example, styling the name, should the styling just be applied to that specific tag, those tags within that page or globally. If this challenge were a larger I would worry the styles might mismatch slightly in different places or get out of hand.