Baseline is a new term that defines a feature broad adoption. There are two stages:

1. The new feature is available in all last versions of the browsers
2. The new feature is widely available after 30 months after the first stage

We can then speak of baseline 2023 that groups all features usable in the considered browsers.

Limitations:

• the browsers considered are Safari, Firefox, Chrome and Edge. The rest is unknown even if they are listed on caniuse.com
• it does not take screen readers and accessibility tools in consideration as part of "availability"