HtmlInputButton1.aspx font size:
View Sample
<html>
<head>
<title>Responding to an HtmlInputButton Control Event</title>
<link rel="stylesheet" href="/shared/netdemos.css">

<script language="C#" runat="server">
void saySomething ( object src, EventArgs e ) {
   switch ( ( ( HtmlInputButton ) src ) .ID ) {
   case "Button1" :
      msg.InnerHtml = "Say something amusing here when the default input type button is clicked";
      break;
   case "Button2" :
      msg.InnerHtml = "Same here when the rollover input type button is clicked";
      break;
   }
}
</script>
</head>

<body>
<!-- #include virtual="~/shared/top.inc -->
<div class="header"><h2>Responding to an <span class="hilite">HtmlInputButton Control</span> Event</h2></div>
<hr size=1 width=92%>

<div align="center">
<form runat="server">

   <p>The default input type button look: </p>

   <p><input type=button id="Button1" runat="server"
      value="Click me!"
      onServerClick="saySomething" />

   <p>With rollover effect: </p>

   <p><input type=button id="Button2" runat="server"
      value="Click me too!"
      onServerClick="saySomething"
      style="font: 13pt verdana; background-color:lightgreen;
         border-color:black; height=50; width:150"
      onMouseOver="this.style.backgroundColor='yellow'"
      onMouseOut="this.style.backgroundColor='lightgreen'" />

   <p id="msg" runat="server" />

</form>
</div>

<hr size=1 width=92%>
<!-- #include virtual="~/shared/viewsrc.inc" -->

</body>
</html>