You can just check it in: Chrome Dev Tool (F12) → Network → Protocol. It will tell you the protocol used and the domain of each transfer. Legend http/1.1 = HTTP/1.1 h2 = HTTP/2 Note: If you cannot see the Protocol column, just right-click on any header and check the “Protocol” label.
Though it is not always the case, one of the most common reasons why a property like transition or animation works on some browsers and not others is because of vendor prefixes. What are vendor prefixes? At the time version 4 of Firefox was introduced, the CSS transition module specification was a Working Draft. Before … Read more
The only reason I can think of is browser vendors losing faith in the standard being approved, therefore removing the implementation from their code. To support this thought: W3C just removed both datetime and datetime-local from their working draft. Browser vendors will eventually drop support of both of them. According to html5test most of the … Read more
It’s supported in: Safari 10.1 Chrome 61 Firefox 54 – behind the dom.moduleScripts.enabled setting in about:config. Edge 16