--- a/eric7/DocumentationTools/QtHelpGenerator.py	Sun Sep 12 17:30:38 2021 +0200
+++ b/eric7/DocumentationTools/QtHelpGenerator.py	Sun Sep 12 20:22:27 2021 +0200
@@ -222,6 +222,7 @@
         sections = self.__generateSections("00index", level=3)
         filesList = sorted(e for e in os.listdir(self.htmlDir)
                            if e.endswith('.html'))
+        filesList.append("styles.css")
         files = "\n".join(
             ["      <file>{0}</file>".format(f) for f in filesList])
         filterAttribs = "\n".join(