Updated colours.

config/en/mkdocs.yaml

@@ -1,6 +1,14 @@
 site_name: My notes
 docs_dir: '../../docs/en'
 
+extra_css:
+  - stylesheets/extra.css
+
+extra_javascript:
+  - javascripts/mathjax.js
+  - https://polyfill.io/v3/polyfill.min.js?features=es6
+  - https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js
+
 theme:
   name: material
   features:
@@ -41,14 +49,6 @@ markdown_extensions:
   - pymdownx.details
   - pymdownx.superfences
 
-extra_css:
-  - stylesheets/extra.css
-
-extra_javascript:
-  - javascripts/mathjax.js
-  - https://polyfill.io/v3/polyfill.min.js?features=es6
-  - https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js
-
 nav:
   - 'Welcome': index.md
   - 'Mathematics':