I try the demo code that you provide but it doesn't work the white line at the bottom edge is still there. Here is how the code look like:
<?xml version='1.0' encoding='utf-8'?>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>part0003</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<link href="../stylesheet.css" rel="stylesheet" type="text/css"/>
<style type="text/css">
@page {padding: 0pt; margin:0pt}
body { text-align: center; padding:0pt; margin: 0pt; }
</style>
</head>
<body>
<div style="display:none" class="title">Full screen image</div>
<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"
width="100%" height="100%" viewBox="0 0 1358 1920" preserveAspectRatio="xMaxYMid meet">
<image width="100%" height="100%" class="full-page-stretch" xlink:href="image_rsrc2GE.jpg"/>
</svg>
</body>
</html>