It&#x27;s possible that Servo replaces Gecko incrementally, from the inside out. Mozilla recently landed support for writing Gecko code in Rust and is importing bits of Servo&#x27;s CSS system:<p><a href="https:&#x2F;&#x2F;bugzil.la&#x2F;oxidation" rel="nofollow">https:&#x2F;&#x2F;bugzil.la&#x2F;oxidation</a><p><a href="https:&#x2F;&#x2F;bugzil.la&#x2F;stylo" rel="nofollow">https:&#x2F;&#x2F;bugzil.la&#x2F;stylo</a>