Tabs

Note the .nav-tabs class requires the .nav base class. Tabs also uses HTML5 roles for accessibility. Add role="tablist" to the ul that contains the tab links, and add role="tab" to the anchor tag that is the tab link. The tab link also requires an HTML5 data-toggle="tab" attribute be applied to instantiate the javascript behavior.

The tab panel uses standadard deep linking markup to target the appropriate tab panel. As such the tabs href should match the ID of the tab panel it targets. For example href="#home" will show the id="home" tab panel

Any tab panel can be the first or default tab by applying .active to the tablist li element and to the corosponding tab panel.

User Tab

Profile Tab

Messages Tab

Settings Tab

Source Code (not responsive):

<div class="tab-group">
    <span class="ca-gov-icon-favorite"></span>
    
    <ul id="homeTabs" class="nav nav-tabs" role="tablist">
        <li class="nav-item active" role="tab"><a href="#home" data-toggle="tab" class="nav-link">User</a></li>
        <li class="nav-item" role="tab"><a href="#profile" data-toggle="tab" class="nav-link">Profile</a></li>
        <li class="nav-item" role="tab"><a href="#messages" data-toggle="tab" class="nav-link">Messages</a></li>
        <li class="nav-item" role="tab"><a href="#settings" data-toggle="tab" class="nav-link">Settings</a></li>
    </ul>
    
    <div class="tab-content">
        <div class="tab-pane active" id="home" role="tabpanel">User Tab</div>
        <div class="tab-pane" id="profile" role="tabpanel">Profile Tab</div>
        <div class="tab-pane" id="messages" role="tabpanel">Messages Tab</div>
        <div class="tab-pane" id="settings" role="tabpanel">Settings Tab</div>
    </div>
</div>

Responsive Tabs

Tabs on small mobile devices can be a really bad experience. By applying the .responsive class to the .tab-group element, the tab will transform from a tab list to an accordion list on small mobile devices. Following example is using bootstrap cards to display tabs as accordion list in mobile devices:

Location

Location Tab

Context

Context Tab

Communication

Communication Tab

Source Code (responsive):

<div class="tab-group responsive">
    <ul id="tabs" class="nav nav-tabs" role="tablist">
        <li class="nav-item">
            <a id="tab-home" href="#pane-home" class="nav-link active" data-toggle="tab" role="tab">Location</a>
        </li>
        <li class="nav-item">
            <a id="tab-profile" href="#pane-profile" class="nav-link" data-toggle="tab" role="tab">Context</a>
        </li>
        <li class="nav-item">
            <a id="tab-messages" href="#pane-messages" class="nav-link" data-toggle="tab" role="tab">Communication</a>
        </li>
    </ul>

<div id="tab-content" class="tab-content" role="tablist">
        <div id="pane-home" class="card tab-pane fade show active" role="tabpanel" aria-labelledby="tab-home">
            <div class="card-header" role="tab" id="heading-home">
                <h5 class="my-0">
                    <a data-toggle="collapse" href="#collapse-home" data-parent="#tab-content" aria-expanded="true" aria-controls="collapse-home" title="Location tab header">
                        Location
                    </a>
                </h5>
            </div>
            <div id="collapse-home" class="collapse show" role="tabpanel" aria-labelledby="heading-home">
                <div class="card-body">
                    Location Tab
                </div>
            </div>
        </div>

<div id="pane-profile" class="card tab-pane fade" role="tabpanel" aria-labelledby="tab-profile">
            <div class="card-header" role="tab" id="heading-profile">
                <h5 class="my-0">
                    <a class="collapsed" data-toggle="collapse" href="#collapse-profile" data-parent="#tab-content" aria-expanded="false" aria-controls="collapse-profile" title="Context tab header">
                        Context
                    </a>
                </h5>
            </div>
            <div id="collapse-profile" class="collapse" role="tabpanel" aria-labelledby="heading-profile">
                <div class="card-body">
                    Context Tab
                </div>
            </div>
        </div>

<div id="pane-messages" class="card tab-pane fade" role="tabpanel" aria-labelledby="tab-messages">
            <div class="card-header" role="tab" id="heading-messages">
                <h5 class="my-0">
                    <a class="collapsed" data-toggle="collapse" href="#collapse-messages" data-parent="#tab-content" aria-expanded="false" aria-controls="collapse-messages" title="Communication tab header">
                        Communication
                    </a>
                </h5>
            </div>
            <div id="collapse-messages" class="collapse" role="tabpanel" aria-labelledby="heading-messages">
                <div class="card-body">
                    Communication Tab
                </div>
            </div>
        </div>
    </div>
</div>

Tabs on bottom

Tabs can be placed below the content. This requires that that .nav-tabs div be placed below the content. The .tabs-bottom class need also be added to the .tab-group

Area Tab

Article Tab

Module Tab

Component Tab