Support the flow-relative Corner Rounding properties following CSS Logical Properties and Values spec. Specifically, the following logical properties are included: border-start-start-radius, border-start-end-radius, border-end-start-radius, and border-end-end-radius. The flow-relative Corner Rounding properties (border-*-radius) will allow to set top-left, bottom-left, top-right and bottom-right box corners with logical mappings rather than physical properties.


The flow-relative properties allow authors to set the different corner border radius depending on the direction and writing mode of the page.




Editor's draft

Status in Chromium


Enabled by default (tracking bug) in:

  • Chrome for desktop release 89
  • Chrome for Android release 89
  • Android WebView release 89

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.


Last updated on 2021-04-26