DLSS component style library

Reference implementation of CSS styles for design components in DLSS. A live version is hosted via GitHub Pages at https://sul-dlss.github.io/component-library/.

A note about color. The primary color will always be "digital blue". A site may choose a secondary color like "cardinal" or "digital green".

See https://identity.stanford.edu/design-elements/color/web/

Component Styles

• Alert
• Banner
• Button
• Facet list
• Footer
• Forms
• Header
• Links
• Pagination
• Popovers
• Selected Facet
• Selected Item
• Toast

In a css file

@layer framework, components, local;
@import url(https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css)
layer(framework);
@import url("https://cdn.jsdelivr.net/npm/[email protected]/font/bootstrap-icons.css")
layer(framework);
@import url("https://cdn.jsdelivr.net/gh/sul-dlss/component-library@v2025-09-11/styles/sul.css")
layer(components);

@import url("my-local-file.css") layer(local);

HTML head link

  <link rel="icon" href="https://cdn.jsdelivr.net/gh/sul-dlss/component-library@v2025-09-11/styles/icon.png" type="image/png">
  <link rel="icon" href="https://cdn.jsdelivr.net/gh/sul-dlss/component-library@v2025-09-11/styles/icon.svg" type="image/svg+xml">
  <link rel="apple-touch-icon" href="https://cdn.jsdelivr.net/gh/sul-dlss/component-library@v2025-09-11/styles/icon.png">

For developers

Setup

npm install

All dependencies are for local development only.

Dev server

Run a simple HTTP server:

npm start

Note that this is required to resolve some paths in development, e.g. url() references to files in CSS will not resolve unless the server is running to serve them.

Linting

Lint the styles with stylelint:

npm run lint

This also runs in CI.

Deploying

The site is built and deployed to GitHub Pages automatically on every push to main, by a workflow that merges changes into the gh-pages branch.

When PRs are opened, the pages-preview workflow will commit a preview of the site to a subdirectory on the gh-pages branch so that it is available to view on the web. The URL for the preview will be:

https://sul-dlss.github.io/component-library/preview-[PR-number]

When the PR is merged, the subdirectory will be cleaned up via another commit to the gh-pages branch.

Testing latest styles locally

If you want to test everything that is currently in main, without having to cut a release, you can update your stylesheet to point to https://sul-dlss.github.io/component-library/styles/sul.css

<link rel="stylesheet" href="https://sul-dlss.github.io/component-library/styles/sul.css" />

or

<style>
  @layer framework, component;
  @import url(https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css)
  layer(framework);
  @import url(https://sul-dlss.github.io/component-library/styles/sul.css) layer(component);
</style>

Releasing

Currently these are hosted via jsDelivr which creates hosted versions of every release. Once you cut a github release the files will be available in jsdeliver at the following URL: https://cdn.jsdelivr.net/gh/sul-dlss/component-library@[version]/styles/sul.css