1.<meta name= "viewport" content= "Width=device-width, initial-scale=1.0" >Answer:Width: The range of the viewable area, the value can be a number or a keyword device-width height: same width Intial-scale: The first time the page is displayed is the zoom level of the viewable area, and the value of 1.0 shows that the page does not have any zoom by the actual size maximum-s cale=1.0, minimum-scale=1.0; the zoom level of the viewable area, Maximum-scale the program that the user can enlarge the page, 1.0 will prevent the user from zooming in on the actual size. User-scalable: Whether the page can be scaled, no disables scaling
2.<meta name= "renderer" content= "WebKit" >Answer:Content value is one of webkit,ie-comp,ie-stand, case-sensitive, respectively, represented by the speed mode, compatibility mode, IE mode open. It will take effect the next time you open the webpage.
3.<meta http-equiv= "Cache-control" content= "No-siteapp"/>Answer:If the third party site does not want a page to be transcoded, the page can be added to this agreement, when the user through mobile search into the third-party site, will go directly to the original page.
4.<meta http-equiv= "x-ua-compatible" content= "Ie=edge"/>Answer:X-ua-compatible is a proprietary <meta> attribute of IE8, which tells IE8 which version of IE to use to render Web pages in the HTML
5. Specific Web pages to write? Answer:<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd "><!– Document Type –>
HTML code header writing meaning
