<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <!--Contains document type definition-->
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><!--means XHTML document is enclosed by the html tag-->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!--this meta tag specifies the character set as utf-8 like in html-->
<title>Private Medical Park Dentistry</title>
</head>
我在 w3 验证器中出错说：错误：XHTML 元素元上属性 http-equiv 的错误值 Content-Type。来自第 5 行，第 5 列；到第 5 行，第 74 列 head>↩