Issue 114

General front page styling.
Should these be marked up as `<h3>`s? 

From: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/Heading_Elements

* "Avoid skipping heading levels: always start from `<h1>`, next use `<h2>` and so on. Also try to have only one first level heading on a page."  (I don't see any `<h2>`s on the page)
* "A heading element briefly describes the topic of the section it introduces."  
* "Do not use lower levels to decrease heading font size: use the CSS font-size property instead."

It might be worth considering the hierarchy of sections and uses of heading levels for this page.