Stack Overflow’s Design System
Latest commit 53ca8c9 Oct 17, 2018


Stacks is Stack Overflow’s design system. It includes the resources needed to create consistent, predictable interfaces and workflows that conform to Stack Overflow’s principles, design language, and best practices.

Our documentation is built with Stacks itself, using its immutable, atomic classes and components.

The Stacks website documents:


  • Semantic and accessible component markup
  • Cross-browser compatible Less / CSS
  • An icon library


  • Email templates & components

Stacks documentation can be found at

Table of contents

Using Stacks

Using Stacks is outlined in our usage guidelines.

Building Stacks

To contribute to Stacks documentation or its CSS library, you’ll need to build Stacks locally. View our building guidelines.

Having trouble getting these steps to work? Open an issue with a setup label.

Bugs and feature requests

Have a bug or feature request? First search existing or closed issues to make sure the issue hasn’t been noted yet. If not, review our issue guidelines for submitting a bug report or feature request.


If you’d like to contribute to Stacks, please read through our contribution guidelines. Included are directions for opening issues, coding standards, and notes on development.


Code and documentation copyright 2017-2018 Stack Exchange, Inc and released under the MIT License.