Tells Internet Explorer to display a webpage in IE10 mode, if possible
1. This example tells Internet Explorer to display a webpage in IE10 mode, if possible. <meta http-equiv="X-UA-Compatible" content="IE=10"> This example tells Internet Explorer to display a webpage in last IE mode or chrome core frame, if possible. <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> is better. 2. <meta name="viewport" content="width=device-width">, this is for mobile. HTML5 Boilerplate： html5boilerplate.com h t t p s: // github.com / h5bp/html5-boilerplate/blob/v4.0.0/doc/README.md