mix-blend-mode has been added to our backlog – https://dev.modern.ie/platform/status/mixblendmode/
4 votesSheila Tanner commented
Point sizes are for printed material. Sure, browsers will use point sizes for webfonts if specified, but web-based sizing should be used for webfonts (em, %, px).
Even vw or vh may be used in the odd case that you want your text to shrink along with the viewport size.
We’re pleased to announce that the details and summary elements are now under development :)
See http://blogs.windows.com/msedgedev/2015/07/14/bringing-componentization-to-the-web-an-overview-of-web-components/ (part 1) and https://blogs.windows.com/msedgedev/2015/07/15/microsoft-edge-and-web-components/ (part 2) for more information on our Web Components thoughts, plans, and roadmap.