Goal

To build a legible layout engine that is close to the theoretical model defined in CSS specs.

Scope

Only static layout and rendering, which implies:

• No scrolling, hovering, selecting, resizing and other user interactions
• No form controls
• No cursors
• No animations, HTML5 Canvas
• No DOM manipulations through Javascript, etc
• No CSS DOM
• Synchronous operations for loading resources like images, stylesheets, etc

Features which are within scope but low priority:

• Border styles
• Border radius
• Box Shadows

Status

As of 11 June 2020, about 57% tests from the W3C CSS2.1 test suite are passing.

Major features yet to be implemented:

• floated elements
• counters
• margin collapse (partially done, more variations TBD)
• RTL language support