Add styling for components generated from MD files

[zenlex]

Markdown files being read in to create blog posts (and potentially other pages) are being transformed via an Abstract Syntax Tree. The structure is set up to apply styles to each type of common component/tag. We can create a base set of styles for those elements and then if any are truly blog-specific a blog-components subset of those style rules as well. Hit up @helmturner or @zenlex for an overview of the component architecture as needed.