Opmitimizing MP4 and WebM videos for the web and converting MP4 to WebM
Resources I used to create a Service Worker. How to develop them without an SSL cert over regular HTTP in Firefox and Chrome and how I fixed my critical CSS to load without calling the server side code.
Serving JXR images (Jpeg XR) to Microsoft Edge when it advertises the Accept: image/jxr header and Serving webp images to Blink (Chrome) based browsers with Nginx.
Flexbox mobile dropdown navigation. Fully accessible with fallbacks for browsers that do not recognize flexbox.