docs: custom.css: add CSS for python

As we'll start adding python to documentation, add some CSS
templates to better display python code.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <b5a3dfd551b887a2885b85b4c9433e757c77628a.1768838938.git.mchehab+huawei@kernel.org>

Author: mchehab

Documentation/sphinx-static/custom.css

@@ -43,6 +43,15 @@ dl.function dt { margin-left: 10em; text-indent: -10em; }
 dt.sig-object { font-size: larger; }
 div.kernelindent { margin-left: 2em; margin-right: 4em; }
 
+/*
+ * Parameters for the display of function prototypes and such included
+ * from Python source files.
+ */
+dl.py { margin-top: 2em; background-color: #ecf0f3; }
+dl.py.class { margin-left: 2em; text-indent: -2em; padding-left: 2em; }
+dl.py.method, dl.py.attribute { margin-left: 2em; text-indent: -2em; }
+dl.py li, pre { text-indent: 0em; padding-left: 0 !important; }
+
 /*
  * Tweaks for our local TOC
  */