# Add a strike html component
In conf.py file:
```
rst_prolog = """
.. role:: strike
"""
```
Extend the layout theme template `layout.html` with:
```
{% extends "!layout.html" %}
{% set css_files = css_files + ["_static/style.css"] %}
```
In the `style.css`:
```
.strike {
text-decoration: line-through;
}
```