Removing Doctype give unwanted font size

Removing Doctype give unwanted font size


Hi guys,
In my html page,
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://
www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252" />
<title>PPM - Powerful Project Manangement</title>
<style>
body {
font:normal 11px Trebuchet MS;
    margin:0px;
}
</style>
The font applies to all the controls but does not support table height
100%.
Instead if i remove the first line i.e. Doctype..., then table seems
good but fonts get bigger and worse.
Is there any solution to this? Or Is there any way to set the default
font for all UI elements?