The html structure needed:

<div class="dropdown">
    <div class="dots">
        <div></div>
        <div></div>
        <div></div>
    </div>
    <div class="dropdown-menu">
        <a href="#"></a>
        <a href="#"></a>
        <a href="#"></a>
        ...
    </div>
</div>

or

<div class="dropdown">
    <div class="dots">
        <div></div>
        <div></div>
        <div></div>
    </div>
    <div class="dropdown-menu">
        <div></div>
        <div></div>
        <div></div>
        ...
    </div>
</div>

The "a" tags can be either the direct children of div.dropdown-menu or the descendant of it

The "div" tags can be only the direct children of div.dropdown-menu