<div class="dropdown open">
    <button class="dropdown-toggle btn btn-primary" type="button">
        Dropdown
        <clr-icon shape="caret down"></clr-icon>
    </button>
    <div class="dropdown-menu">
        <h4 class="dropdown-header">Dropdown header</h4>
        <a href="..." class="dropdown-item active">Action</a>
        <a href="..." class="dropdown-item disabled">Disabled Link</a>
        <div class="dropdown-divider"></div>
        <a href="..." class="dropdown-item">Lorem.</a>
        <a href="..." class="dropdown-item">Lorem ipsum.</a>
    </div>
</div>