To use our build system and run our documentation locally, you’ll need a copy of Bootstrap’s source files and Node. Follow these steps and you should be ready to rock:

1. , which we use to manage our dependencies.
2. Either download Bootstrap’s sources or fork .

When completed, you’ll be able to run the various commands provided from the command line.

Using npm scripts

Bootstrap uses (included in our build process) to automatically add vendor prefixes to some CSS properties at build time. Doing so saves us time and code by allowing us to write key parts of our CSS a single time while eliminating the need for vendor mixins like those found in v3.

We maintain the list of browsers supported through Autoprefixer in a separate file within our GitHub repository. See .browserslistrc for details.

RTLCSS

Running our documentation locally requires the use of Hugo, which gets installed via the hugo-bin npm package. Hugo is a blazingly fast and quite extensible static site generator that provides us: basic includes, Markdown-based files, templates, and more. Here’s how to get it started:

1. Run through the above to install all dependencies.
2. From the root /bootstrap directory, run npm run docs-serve in the command line.
3. Open in your browser, and voilà.

Learn more about using Hugo by reading its documentation.

Troubleshooting