Have you ever thought about how Emoji work behind the scenes? I looked into this topic, and I pretty much felt like Alice in Wonderland: there's so much I didn't know about it!
aria-selected can be tricky to use. When should you use it and when are there better alternatives. Let's have a look!
Custom user metrics can very valuable to understand the experience of our users. Webpagetest offers the visualization of these, too!