Applies to all Stack Exchange sites.
A userstyle extension is required, common ones include:
🎨 Stylus for Firefox, Chrome or Opera.
🎨 xStyle for Firefox or Chrome.
Then install using one of these methods:
📦 Install the usercss with Stylus or xStyle. Supports automatic updates.
📦 Install from userstyles.org with customization, does not support automatic updates (NO LONGER UPDATED).
If you would like to contribute to this repository, please...
- 👓 Read the contribution guidelines.
Fork or 
download this repository.- 👌 Create a pull request!
Thanks to all that have contributed so far!