CSS3 Text Decoration spec adds new properties that implement new text decoration styling features such as lines, color, and style. This feature adds support for 'left' and 'right' values of the 'text-underline-position' property. The property itself shipped in Chrome 57. Currently, in vertical flow for Chinese and Japanese, which side the underline appears on is not the same across browsers. This enhancement fixes that.


Specification link

Specification currently under development in a Working Group

Status in Chromium


Enabled by default (tracking bug)

Consensus & Standardization

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



Edge supports the old syntax. There are no public signals to update it. https://www.chromestatus.com/features/5766823203045376

Last updated on 2021-12-13