Code:
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>ebook copy for formatting.xhtml</title>
<link rel="stylesheet" href="../Styles/template.css" type="text/css" />
<style type="text/css">
/*<![CDATA[*/
span.sgc-1 {font-family: Arial; line-height: normal; font-size: medium;}
/*]]>*/
</style>
</head>
<body>
<div class="generated-style" id="ebook-copy-for-formatting">
<p class="basic-paragraph basic-paragraph-override" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-gb"><span class="no-style-override-2 sgc-1"><img alt="cover" src="../Images/ebook%20cover.jpg" /></span></p>
</div>
</body>
</html>
All <img> tags need to have an alt attribute that gives the text that would be read out by a screen-reader. The standard requires this to promote accessibility for the visually-impaired. The text for alt can be blank
(alt="") for images which are purely stylistic flourishes, but you're encouraged to use meaningful text where appropriate.