diff --git a/mkdocs.yml b/mkdocs.yml
index 1d4fa5d..2cba344 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -12,14 +12,14 @@ plugins:
   - search
   - git-authors
   - git-revision-date-localized
-  - mkdocs-plugin-open-external-links-in-new-tab:
-      external_extensions:
-        - ".pdf"
-        - ".zip"
+  #- mkdocs-plugin-open-external-links-in-new-tab:
+  #    external_extensions:
+  #      - ".pdf"
+  #      - ".zip"
 
 markdown_extensions:
   - pymdownx.superfences
   - pymdownx.highlight
 
-#extra_css:
-#  - stylesheets/extra.css
\ No newline at end of file
+extra_css:
+  - stylesheets/extra.css
\ No newline at end of file