[CSS] Center the web page compatibility for Firefox & IE

* inside the css file is:

body {
text-align: -moz-center;
}

* inside the body tag is:

<@!--[if gte IE 7.0]@>
<@style type="text/css"@>
body {
text-align: center;
}

<@![endif]--@>

NOTE: remove the @ character to get the code