HTML5 format (recommended)
<meta charset="UTF-8">HTML4 format
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">Keyword
Description: keywords are used to tell search engines what the keywords of your webpage are.
<meta name="keywords" content="关键字,keywords"/>description
Description: description is used to tell search engines the main content of your website.
<meta name="description"content="这是一个描述。">Author
Description: Annotate the author of the page
<meta name="author"content="root,[email protected]">refresh
Description: Automatically refresh and point to the new page.
<meta http-equiv="refresh" content="2;URL=http://www.baidu.com">--2秒后刷新