Spelling and grammar text decorations
The text-decoration-line: spelling-error and text-decoration-line: grammar-error CSS declarations apply the browser's marking for spelling and grammatical mistakes. This is typically a wavy underline in red or green.
Browser support
| Feature | Desktop | Mobile | ||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Safari | Chrome Android | Safari iOS | |
css.properties.text-decoration-line.grammar-error | 121 | 121 | 137 | 26.2 | 121 | 26.2 |
| CSS property | ||||||
spelling-error | 121 | 121 | 137 | 26.2 | 121 | 26.2 |
1+Supported (version) Not supported ※Has note Sub-feature descriptions sourced from MDN Web Docs (CC BY-SA 2.5)
Syntax
CSS
.spelling-error {
text-decoration-line: spelling-error;
}
.grammar-error {
text-decoration-line: grammar-error;
}Live demo
wavy line in alternativerepresentation
CSS wavy line in alternativerepresentation demo.
PreviewFullscreen
Use cases
-
Browser-native behavior
Use Spelling and grammar text decorations to rely on the platform for behavior that would otherwise require extra code or CSS complexity.
-
Progressive enhancement
Enhance the experience where support exists while keeping a solid baseline elsewhere.
Cautions
- Check browser support and actual product need before adding a new platform feature widely.
- Keep feature usage understandable so future contributors know why it was chosen.
Accessibility
- New platform features should still preserve readable defaults and robust interaction patterns.
- Verify that enhancement paths do not leave unsupported environments with a broken experience.