Try this:
HTML:
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="../Styles/Style0001.css" />
</head>
<body>
<p><span class="spaceafter">“</span>‘some test text’<span class="spacebefore">”</span></p>
</body>
</html>
CSS:
span.spaceafter {
margin-right: 0.1em;
}
span.spacebefore {
margin-left: 0.1em;
}