diff --git a/README.md b/README.md
index 0f57031..4f10057 100644
--- a/README.md
+++ b/README.md
@@ -11,13 +11,13 @@
 
 ## Installation
 
-```shell
+```bash
 pip install .
 ```
 
 ## Usage
 
-```shell
+```bash
 fillname -h
 ```
 
diff --git a/doc/conf.py b/doc/conf.py
index f16b904..b02d1ab 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -121,3 +121,6 @@
 # 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']
+
+copybutton_prompt_text = r">>> |\.\.\. |\$ |In \[\d*\]: | {2,5}\.\.\.: | {5,8}: "
+copybutton_prompt_is_regexp = True
diff --git a/doc/content/installation.md b/doc/content/installation.md
index 2fa01c9..d5cb677 100644
--- a/doc/content/installation.md
+++ b/doc/content/installation.md
@@ -4,8 +4,8 @@ fillname requires Python 3.8+. We recommend version 3.10.
 
 You can check a successful installation by running
 
-```shell
-fillname -h
+```console
+$ fillname -h
 ```
 
 ## Installing with pip
@@ -13,8 +13,8 @@ fillname -h
 
 The python fillname package can be found [here](https://pypi.org/project/fillname/).
 
-```shell
-pip install fillname
+```console
+$ pip install fillname
 ```
 
 ## Development
@@ -34,8 +34,8 @@ The `setuptools` package is required to run the commands below.
 
 Execute the following command in the top level fillname directory:
 
-```shell
-git clone https://github.com/potassco/fillname
-cd fillname
-pip install -e .[all]
+```console
+$ git clone https://github.com/potassco/fillname
+$ cd fillname
+$ pip install -e .[all]
 ```
diff --git a/doc/content/quickstart.md b/doc/content/quickstart.md
index 9ed6151..91841a9 100644
--- a/doc/content/quickstart.md
+++ b/doc/content/quickstart.md
@@ -2,8 +2,8 @@
 
 A simple explanation on how to use the system.
 
-```shell
-fillname -h
+```console
+$ fillname -h
 ```
 
 ```{tip}
diff --git a/tests/test_main.py b/tests/test_main.py
index a768bb6..b1e7f19 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -1,6 +1,7 @@
 """
 Test cases for main application functionality.
 """
+
 import logging
 from io import StringIO
 from unittest import TestCase