<! DOCTYPE html> what this place represents the beginning of the document?
This feature tells the browser to w3c standards parsing and rendering the page.
Browser parses the page has two modes, the first resolved in accordance with the browser on your way. Called quirks mode
II using standard analytical w3c page called standard mode.
If you do not write the statement, each browser will be resolved in its own way, using quirks mode in different browsers have different performance, called this statement, it is resolved in accordance with the standard mode, all browsers consistent.
I saw this statement that he is a h5 page. H5 new features can be used.
Meta tag meta-information tags
Charset = "utf-8" font encoding, international coding is utf-8 (analytical standard browser) mainland China is gb2312 Taiwan, Hong Kong Traditional Chinese font encoding is big5
<Meta name = "viewport" Content = "width = Device-width, Initial-Scale =. 1, Minimum-Scale =. 1, maximum-Scale =. 1, User-Scalable = NO" />
the name = "the viewport" call viewport content is the specific operation of the viewport
width = device-width viewport width equal to the width of the device
default browser viewport is 980, above the label is to make the browser viewport and equipment viewport consistent.
<Meta name = "the Description" Content = "" />
the Name = "the Description"
for the site to do the official website explained. Content is explained in details.
<meta name = "Keywords" content = "" />
to do a keyword search of the site.
<meta http-equiv = "Pragma " content = "no-cache" />
inform the web page is not cached
<meta http-equiv = "refresh " content = "5; url = https:
<link rel = "shortcut icon" type = "image / x-icon" href = "" />
a relationship file and the current file request Rel
Type type requested file
path to the requested file Href
Shortcut icon especially browser icon in the left column shows the address of the
<link rel = "stylesheet" href = "a.css" />