1 Introduction

This document describes the level of support provided by Microsoft web browsers for the CSS Basic User Interface Module Level 3 (CSS3 UI) specification [CSS3UI:2018], published June 2018.  The [CSS3UI:2018] specification describes user interface related properties and values that are proposed for CSS level 3 to style HTML and XML (including XHTML). It includes and extends CSS level 2 revision 1.