userctrlsyntax.aspx font size:
C# Source: userctrlsyntax.aspx   header.ascx   footer.ascx   
<%@ Register tagPrefix="myCtrls" tagName="header" Src="header.ascx" %>
<%@ Register tagPrefix="myCtrls" tagName="footer" Src="footer.ascx" %>

<html>
<head>
<title>ASP.NET Primer: User Control Syntax Example</title>
<link rel="stylesheet" href="/shared/netdemos.css">
<style type="text/css">
<!--
   h3 {margin-bottom:0}
-->
</style>
</head>

<body style="margin:0">

<div align="center"><myCtrls:header runat="server" /></div>

<div style="margin: 5 20">

   <div class="header"><h2>ASP.NET Primer: <span class="hilite">User Control Syntax Example</span></h2></div>

   <p>This example shows how to insert a custom header and footer within an ASP.NET page.

   <p>Both the header and footer in this page are stored as separate files with an <b>.ascx</b> filename extension, which can be easily inserted into any or all <b>.aspx</b> pages of a site via a simple &lt;<code>tagPrefix:tagName runat=&quot;server&quot;</code>&gt; declaration.

   <p align="center"><img src="/shared/images/pagelets2.gif" width=250 height=200 border=0 alt=""></p>
   
   <p>User controls are best suited in scenarios where code is to be shared and re-used across multiple pages of an application. These include not only static code for headers, footers, and menus, but even code that dynamically generates content as well.

   <p>To see how this sample is done, <a href="/shared/viewsrc.aspx?path=/aspnet/webforms/demos/intro/userctrlsyntax.aspx.src">view the source code</a> for this set of pages.

</div>

<div align="center"><myCtrls:footer runat="server" /></div>

</body>
</html>