diff --git a/question/format/xhtml/format.php b/question/format/xhtml/format.php
index bb54d80c04c..11ca25d92f7 100644
--- a/question/format/xhtml/format.php
+++ b/question/format/xhtml/format.php
@@ -172,7 +172,9 @@ class qformat_xhtml extends qformat_default {
         $xp .= "<head>\n";
         $xp .= "<meta http-equiv=\"content-type\" content=\"text/html; charset=UTF-8\" />\n";
         $xp .= "<title>Moodle Quiz XHTML Export</title>\n";
+        $xp .= "<style type=\"text/css\">\n";
         $xp .= $css;
+        $xp .= "</style>\n";
         $xp .= "</head>\n";
         $xp .= "<body>\n";
         $xp .= "<form action=\"...REPLACE ME...\" method=\"post\">\n\n";
diff --git a/question/format/xhtml/xhtml.css b/question/format/xhtml/xhtml.css
index 2c3a5980f86..2bc3b73289b 100644
--- a/question/format/xhtml/xhtml.css
+++ b/question/format/xhtml/xhtml.css
@@ -1,23 +1,20 @@
-<style>
-  body {
+body {
     font-family: Verdana, Helvetica, Sans-Serif;
     background-color: #fff;
     color: #000;
-  }
+}
 
-  .question {
+.question {
     border: 1px solid #ddd;
     margin: 5px;
     padding: 3px;
-    }
+}
 
-  .question h3 {
+.question h3 {
     font-weight: normal;
     font-size: 125%;
-  }
+}
 
-  .question ul {
+.question ul {
     list-style-type: none;
-  }
-
-</style>
+}
