<clr-dropdown [clrMenuPosition]="'top-left'">
    <button class="dropdown-toggle btn btn-primary" type="button">
        Dropdown
    </button>
    <div class="dropdown-menu">
        <label class="dropdown-header">Dropdown header</label>
        <a class="dropdown-item">Action 1</a>
        <a class="dropdown-item">Action 2</a>
        <div class="dropdown-divider"></div>
        <a class="dropdown-item">Link 1</a>
        <a class="dropdown-item">Link 2</a>
    </div>
</clr-dropdown>