kCssTransformProperties top-level constant
The CSS properties CssTransformHtmlExtension renders.
flutter_html 3.0.0 parses neither and drops both silently, which is why
this package exists. The sibling utility-class packages pin this exact set
by name when they decide which declarations to suppress, so it is stable
public API. Adding a property here, or removing one, is a breaking change
for them.
Implementation
const Set<String> kCssTransformProperties = {'transform', 'transform-origin'};