diff -r c4d22fabf017 -r a7332a53e6dc src/source/conf.py
--- a/src/source/conf.py	Sun Mar 11 11:40:48 2018 +0100
+++ b/src/source/conf.py	Mon Mar 26 10:38:06 2018 +0200
@@ -83,7 +83,7 @@
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = 'pyramid'
+html_theme = "sphinx_rtd_theme"
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the