Make flexbox and flex items obey the positional alignment keywords from https://drafts.csswg.org/css-align-3/#positional-values. Flexbox previously only obeyed center, flex-start, and flex-end. The additional alignment keywords (start, end, self-start, self-end, left, right) allow authors to more easily align the flex items in the face of varying writing modes and flex flows.
Without these additional keywords, developers need to change the keyword values whenever they change the writing mode, text direction, or flex reversal properties (flex-direction: row/column-reverse or align-content: wrap-reverse). The keywords implemented here let them set alignment once.
Unknown standards status - check spec link for status
Status in Chromium
Enabled by default
Consensus & Standardization
Last updated on 2021-12-13