https://msdn.microsoft.com/en-us/library/8aea05e3-8c1e-4a9a-9614-31f71e679465 Internet Explorer 9 and later support the Selectors Level 3 specification with no variations or extensions. https://msdn.microsoft.com/en-us/library/8aea05e3-8c1e-4a9a-9614-31f71e679465 <b>Protocol Revision:</b> 2.2<br/> Tue, 28 Aug 2018 MS-CSS3SEL-20180828 https://msdn.microsoft.com/en-us/library/8aea05e3-8c1e-4a9a-9614-31f71e679465 <b>Protocol Revision:</b> 2.2<br/> Fri, 23 Mar 2018 MS-CSS3SEL-20180323 https://msdn.microsoft.com/en-us/library/8aea05e3-8c1e-4a9a-9614-31f71e679465 <b>Protocol Revision:</b> 2.2<br/> Thu, 22 Feb 2018 MS-CSS3SEL-20180222 https://msdn.microsoft.com/en-us/library/8aea05e3-8c1e-4a9a-9614-31f71e679465 <b>Protocol Revision:</b> 2.2<br/> Tue, 03 Oct 2017 MS-CSS3SEL-20171003 https://msdn.microsoft.com/en-us/library/8aea05e3-8c1e-4a9a-9614-31f71e679465 <b>Protocol Revision:</b> 2.2<br/> Tue, 14 Mar 2017 MS-CSS3SEL-20170314 https://msdn.microsoft.com/en-us/library/8aea05e3-8c1e-4a9a-9614-31f71e679465 <b>Protocol Revision:</b> 2.2<br/> Wed, 02 Nov 2016 MS-CSS3SEL-20161102