Three days ago, Nan-Hung contributed a TAMU (Texas A&M) theme to the xaringan package, following my call for new xaringan themes last year. It was a good and relatively simple example of how xaringan CSS themes work. He also summarized other currently available themes in xaringan in his example. It is great that people are starting to realize the power of CSS. I’m definitely looking forward to more wonderful themes.