Update Typography Styles
Created by: ehunter-usgs
Pull in web fonts from US Web Design Standards
- https://playbook.cio.gov/designstandards/visual-style/#typography
- https://github.com/18F/web-design-standards/blob/18f-pages-staging/assets/_scss/elements/_typography.scss
Replace the fonts that are currently used in the template, with these new web fonts, using progressive enhancement.