<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
        <title></title>
    </head>
    <body>

    </body>
</html>

<!DOCTYPE html>
<html lang="ja">
<head>
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
    
</body>
</html>

Use HTML5 instead of XHTML
Use HTML5 instead of XHTML
