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README.md

Welcome to Chi

Chi is a CenturyLink CSS pattern library for building fast, reusable, and consistent responsive interfaces.

Getting Started

Integrating Chi with your project is as simple as loading the Chi stylesheet from the CenturyLink Assets Server. Not only is this a great way to get started with Chi, it is also a highly available and performant option for loading the required assets into your project.

Begin by adding the Chi stylesheet to your project's layout template, replacing VERSION with the most recent release of Chi:

<link rel="stylesheet" href="https://assets.ctl.io/chi/VERSION/chi.css">

Next, add the chi CSS class to the <html> tag of your document to properly scope the styles. This allows Chi to override any existing styles that have been defined by legacy markup.

<!DOCTYPE html>

<html class="chi">
  ...
</html>

At this point you will be able to target the styles available in Chi by referencing its documentation.

Development Workflow

The preferred way to setup your development environment is with Docker. If you have Docker installed, run the command:

$ npm run docker -- start

Once the container has been bootstrapped and the Chi project has started, connect to http://localhost:8000 in your browser to load Chi. While running, any changes to the Chi source will be automatically reloaded in your browser.

You may also run the project without Docker by following the standard conventions for Node.js-based applications:

$ npm install
$ npm start

Testing Changes

We use BackstopJS for visual regression testing of our CSS components. In order to account for differences in development environments we always run these tests in a consistent Docker container. To execute the test suite, run the following command:

$ npm run docker -- test

A report containing the results of the test will be created under reports/html_report. If there were failures, you will need to visually examine the changes and act appropriately based on the anticipated results.

If you receive a test failure and you've made changes that you know are correct, you will need to override the test references with your new changes by running the approve command on BackstopJS:

$ npm run docker -- approve

Once you have approved the changes, commit the new reference files with your changes.

License

Chi and its documentation are released under the terms of the MIT license.

In addition, Chi uses several 3rd-party libraries, a list of which can be viewed in the package.json file. Please review each of their license and user agreements, as well.

Contribution Notice

By contributing to this Project, You grant to CenturyLink and to recipients of software distributed by CenturyLink, a perpetual worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute your contributions to this Project (“Your Contributions”), including derivative works thereof.

You grant to CenturyLink and to recipients of software distributed by CenturyLink a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section), patent license to make, have made, use, offer to sell, sell, import and otherwise transfer Your Contributions, where such license applies only to those patent claims licensable by You that are necessarily infringed by Your Contributions(s) alone or by combination of Your Contribution(s) with this Project. If any entity institutes patent litigation against You or any other entity (including a cross-claim or counterclaim in a lawsuit) alleging that Your Contribution, or this Project, constitutes direct or contributory patent infringement, then any patent licenses granted to that entity under this agreement for Your Contribution or this Project shall terminate as of the date such litigation is filed.

You represent that each of Your Contributions is Your original creation and represent that You are legally entitled to grant the above license and that no other third party permission is required. If your employer(s) has rights to intellectual property that is included in Your Contributions, You represent that You have received permission to make such contributions on behalf of that employer.

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