The attr_list extension is a feature of Python-Markdown that allows you to add custom attributes to HTML elements generated from Markdown.
Configuration
# mkdocs.yml
markdown_extensions:
- attr_list
Syntax
The theme may provide some pre-computed classes. The attr_list extension (with extra) allows to customize the attribute of the output html. Here is a example with the reference class.
[Reference](https://python-markdown.github.io/extensions/attr_list/){: class="reference" }