<clr-dropdown [clrMenuPosition]="'top-left'">
    <button class="btn btn-outline-primary" clrDropdownToggle>
        Dropdown
        <clr-icon shape="caret down"></clr-icon>
    </button>
    <div class="dropdown-menu">
        <label class="dropdown-header">Dropdown header</label>
        <a href="..." clrDropdownItem>Action 1</a>
        <a href="..." clrDropdownItem>Action 2</a>
        <a href="..." class="disabled" clrDropdownItem>Disabled Action</a>
        <div class="dropdown-divider"></div>
        <a href="..." clrDropdownItem>Link 1</a>
        <a href="..." clrDropdownItem>Link 2</a>
    </div>
</clr-dropdown>