Our detectives are back with the following intel on this WordPress site
The site is using the GovPress theme by GovFresh .
We could identify 2 plugins (there might be more) - Comfortable Reading and FancyBox for WordPress
A free WordPress theme designed for government use. Features include color customizations options, custom headers, multiple widget areas, and an optional icon navigation menu. Extensive documentation and recommended plugins can be found at govpress.co. All code is peer reviewed and patches are welcome via GitHub.