https://compat.spec.whatwg.org currently defines a whole load aliases for flexbox which are implemented across all major browsers today. It would be nice to move these into the main flexbox spec, rather than have them defined elsewhere.

Specifically, the following should be legacy name aliases:

• -webkit-align-content
• -webkit-align-items
• -webkit-align-self
• -webkit-flex
• -webkit-flex-basis
• -webkit-flex-direction
• -webkit-flex-flow
• -webkit-flex-grow
• -webkit-flex-shrink
• -webkit-flex-wrap
• -webkit-justify-content
• -webkit-order

(Note that this issue is not about the older -webkit-box-* properties, where behaviour does differ from the modern spec in all browsers.)