Hey,

Every week is a learning week and this week I was reminded that viewport units are not all good to use. Also, choosing the right HTTP status code can be difficult and may not even be supported by the Apache version running on your server. I also learned how JavaScript error logging can be extended so that you can finally get easy-to-read and useful reports.
As if that wasn’t enough, I learned a lot about accessibility and progressive enhancement again, and discovered a slidedeck on how you can bypass CSP and why browsers can render elements with known boundaries as well as layout limitations incredibly faster than unknown. Are you ready? It's now your turn to learn all of this as well.

Generic

Tooling

Security

Web Performance

HTML & SVG

Accessibility

JavaScript

CSS

—Anselm