how to create menu like this?

[ladoborton]

• about us

<li class="dropdown">
    <a href="#">attorney <i class="fa fa-angle-down"></i></a>
    <div class="sub-menu">
        <ul>
            <li><a href="attorney.html">attorney Team</a></li>
            <li><a href="attorney-profile.html">attorney-profile</a></li>
        </ul>
    </div>
</li>

<li><a href="contact.html">contact us</a></li>