sphinx: add CSS theme override

It is possible to override CSS settings from the theme, by providing
custom snippets of CSS stylesheet. Support for that is added in
conf.py file.

The following changes are made:
* remove the overall text width which (set to 800px by default)
* improve the visual output, and colors of links and admonition

(From yocto-docs rev: 0c1e108bc6c452f7cc8c665bee984bd7da281666)

Signed-off-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/documentation/conf.py b/documentation/conf.py
index f25c53cb68..643bd7cbc9 100644
--- a/documentation/conf.py
+++ b/documentation/conf.py
@@ -54,4 +54,10 @@ html_theme = 'sphinx_rtd_theme'
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['_static']
+html_static_path = ['sphinx-static']
+
+html_context = {
+    'css_files': [
+        '_static/theme_overrides.css',
+    ],
+}