In Summer 2019 we will be moving Capital Framework's code to the design-system repository. Until that migration occurs, please continue to use these docs.


Atomic Component is a micro framework for building Atomic Design components that utilize JavaScript. It is a dependency of other packages and isn’t used on its own.

Table of contents


This framework is intended to be used in conjunction with adherence to Atomic Design principles. It helps provide a uniform way to build Atomic components using HTML, CSS, and JavaScript.

An example use case in building a Molecule is as follows:

Molecules are prefixed with “m-” in CSS, JavaScript, and HTML files.


<div class="m-notification">
    <span class="m-notification_icon cf-icon"></span>
    <div class="m-notification_content" role="alert">
        <div class="h4 m-notification_message">message</div>
            <p class="h4 m-notification_explanation">
              Please check the URL and try again.


.m-notification {
    display: none;
    position: relative;
    padding: @notification-padding__px;


const CONSTANTS = { MESSAGE: 'message', EXPLANATION: 'explanation' };

const NotificationMolecule = Molecule.extend( {
      classes: {
        isVisible:   'm-notification__visible'

      ui: {
        base:        '.m-notification',
        explanation: '.m-notification_explanation',
        message:     '.m-notification_message'

      initialize: function() {
        this.ui.message.textContent = CONSTANTS.MESSAGE;
        this.ui.explanation.textContent = CONSTANTS.EXPLANATION;
} );

NotificationMolecule.constants = CONSTANTS;