docs: add extra css for prompt (#85)

Fixes #50

Author: afuetterer

docs/mkdocs.yml

@@ -66,6 +66,7 @@ markdown_extensions:
 - pymdownx.highlight:
     anchor_linenums: true
     line_spans: __span
+    use_pygments: true
     pygments_lang_class: true
 - pymdownx.inlinehilite
 - pymdownx.snippets
@@ -75,3 +76,6 @@ extra:
   version:
     provider: mike
     alias: true
+
+extra_css:
+- css/extra.css

docs/src/css/extra.css

@@ -0,0 +1,5 @@
+/* Ref: https://mkdocstrings.github.io/recipes/#prevent-selection-of-prompts-and-output-in-python-code-blocks */
+
+.language-pycon .gp, .language-pycon .go { /* Generic.Prompt, Generic.Output */
+  user-select: none;
+}