"-moz-first-node" | Can I use... Support tables for HTML5, CSS3, etc

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October 11, 2025 - Site update: web-features now included + new feature list functionality

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node api: firstchild
css selector: `:-moz-first-node`

Can I use...

Browser support tables for modern web technologies

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Green ✅ = Supported
Red ❌ = Not supported
Greenish yellow ◐ = Partial support
Gray ﹖ = Support unknown