Add support for the outline-offset property, supported in all other browsers.
outline-offset is now in development in Edge. You can follow progress at https://developer.microsoft.com/en-us/microsoft-edge/platform/status/cssoutlineoffset
This may seem like a small property with limited significance, but the lack of support for this has meant rethinking our whole a11y focus state strategy for buttons for us here at m.target.com!
David Storey [MSFT] commented