Two-color focus indicator to ensure sufficient contrast with all components
https://www.w3.org/WAI/WCAG21/Techniques/css/C40
Best semantic markup for a Blockquote:
https://coderwall.com/p/tvkd9w/best-semantic-markup-for-a-blockquote
Visually hidden css:
https://medium.com/@jessebeach/beware-smushed-off-screen-accessible-text-5952a4c2cbfe#.2g9wpybl9