Introduction

AngularCSS provides HTML-first styles and focused interface components for AngularTS. Most interface elements are semantic HTML styled directly by CSS. TypeScript components are reserved for interactions that native HTML, CSS, and AngularTS do not already provide.

AngularCSS is a customization system, not a design system. It provides a stable functional baseline and presentation controls; the application owns its brand, visual language, and product-specific design.

<button variant="outline">Save changes</button>

No directive runs for this button. The browser owns activation and disabled state, AngularTS owns application commands, and CSS targets the native element and authored variant directly.

Three layers

1. HTML owns semantics. Use button, input, dialog, nav, table, and other native elements whenever they fit the interaction.
2. AngularTS owns application state. Use ng-model, ng-click, validation, interpolation, and structural directives for values and business behavior.
3. AngularCSS fills genuine interaction gaps. Components add composite keyboard navigation, focus management, disclosure coordination, and dynamic accessibility relationships only when the first two layers are insufficient.

This boundary prevents a component from creating a second form model, template engine, validation system, or styling-state mirror over AngularTS and the browser.

HTML-first composition

Complex components are composed from named parts rather than hidden templates:

<details class="disclosure">
  <summary>Account settings</summary>
  <section>
    <label for="display-name">Display name</label>
    <input id="display-name" ng-model="profile.name" />
  </section>
</details>

You control the elements, content, AngularTS expressions, and application CSS. Each catalog page documents the authored HTML and any runtime behavior it needs.

What is included

• 67 documented entries split into foundations, elements, patterns, focused behavioral components, and recipes.
• TypeScript declarations generated from the canonical source.
• A compiled CSS entrypoint and a DTCG 2025.10 customization token resolver.
• Local UMD and ESM builds.
• Browser-tested demos isolated from the documentation shell in iframes.

Next step

Install AngularCSS and connect the angular.css module to an AngularTS application.