This article has a great tip for working with Safaris different browser UIs.
We have been trying to learn content-visbility and get more comfortable about all of the different use cases and it bought us to this css tricks article from last year.
You can now work on Shopify themes in the browser. StackBlitz will let you work on your Hydrogen apps. For in browser tools StackBlitz is slowing becoming
Core Web Vitals
The Core Web Vitals rollout has added a lot of terms and new things that we have to account for and worry about.