What are some lessons you have learned from a11y?

What are some lessons you have learned from either implementing a11y or fixing a11y issues? I would love to hear about unexpected and unintuitive a11y problems that you may have come across when developing.

What is your preferred CSS pre-processor?

Any good resources for advanced React topics?

I have had work experience with React about a year and I need to freshen up on my React skills.

Live Search with RxJS