Feature description

When AMP compatibility was added for the Twenty Nineteen theme, we tried our best to implement support for the mobile menu (or rather, to use CSS only to implement the feature: WordPress/twentynineteen#337):

However, we weren't able to implement this without JS (see touch-keyboard-navigation.js), so we had to ship the no-JS fallback experience for AMP (#1587).

However, there is now an AMP component dedicated for this purpose: amp-nested-menu. We should now leverage it in the core theme sanitizer.

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Acceptance criteria

Implementation brief

QA testing instructions

Demo

Changelog entry