📃 July 2025 release notes
Widely available
The following features are now widely available:
- MathML: MathML, or the Mathematical Markup Language, describes mathematical notation, such as expressions and formulas. Also known as MathML Core.
New in Firefox
The following features are now available in Firefox:
-
<dialog closedby>:
The
closedby
HTML attribute for<dialog>
sets which user actions close a dialog. For example,closedby="any"
allows the dialog to be closed by clicking outside of it. -
font-variant-emoji:
The
font-variant-emoji
CSS property sets the default presentation for emoji characters.
New in Firefox for Android
The following features are now available in Firefox for Android:
-
<dialog closedby>:
The
closedby
HTML attribute for<dialog>
sets which user actions close a dialog. For example,closedby="any"
allows the dialog to be closed by clicking outside of it. -
font-variant-emoji:
The
font-variant-emoji
CSS property sets the default presentation for emoji characters.