diff --git a/.gitignore b/.gitignore
index d8b83a9..a362868 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,16 +1,18 @@
-# Backups.
+# Editors/IDEs
 .*.swp
 .*.swo
-*.html
 *~
+tags
+
 # websites.
 /website/
 /wiki/
+
 # Generated files.
 /docs/dev-doc/
 /build/
+*.html
+*.css
 *.pyc
 offlineimap.1
 offlineimapui.7
-# Editors/IDEs
-tags