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