[Witness]

Looks like a lot has happened since I last checked. Thanks for the info. Keep in mind that the thread title had a "?" in it and u/noersetiawan pretty much answered it.

[astondg]

Microsoft has gotten better, but IE has long been non-compliant with W3C standards. Web developers used to have to code their sites two ways: one for IE, and one for all other browsers that met W3C standards.

That hasn't really been the case since IE9. MS rewrote the rendering engine at that point to be HTML 5 compliant. HTML 5 was still a draft spec at that stage but IE has continued to be refined.

IE on WP is a bit different though, it isn't the full desktop rendering engine. That's where Edge should even things out.