Formating Content with Plugin

I am trying to add html to this section but when i add formatting to center object its not working. Just Left Justifies the text


HTML Sample

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Project 365 Footer Menu</title>
<style type="text/css">
.Center {
text-align: center;
.Center {
text-align: center;

<body class="Center">

eg i want to add menu system to bottom for all templates on MU site