<script
src="https://cdn.jsdelivr.net/gh/hchiam/[email protected]/flying-focus.js"
integrity="sha384-R/GTkKePjxM+7NiHK3HnRFNqvOoCND50qZZgnhKN8NsT3cRIIrTRw1EdS61VgW3W"
crossorigin="anonymous"
></script>
bash get-integrity.sh
https://github.com/NV/flying-focus
https://github.com/hchiam/flying-focus_0
You can see a flying focus ring being used on the web accessibility web site https://webaim.org