Adds support for percentage values to the opacity properties, specifically, opacity, stop-opacity, fill-opacity, stroke-opacity, and shape-image-threshold. For example, opacity: 50%; is equivalent to opacity: 0.5; https://drafts.csswg.org/css-color/#transparency
This brings consistency and spec compliance. The rgba() function already accepts percentage alpha value, for example rgba(0, 255, 0, 50%).
Status in Chromium
Enabled by default (tracking bug) in:
- Chrome for desktop release 78
- Chrome for Android release 78
Consensus & Standardization
Last updated on 2019-08-07