- demo: https://csslick.github.io/location-menu/
- https://www.figma.com/file/4UXZlI6OmkmoBtAbPIpKN2/location-menu?node-id=0%3A1
<nav>
<a href="#" class="home">Home</a>
<div class="depth1">
<a href="#" class="depth1-open-btn">회사소개 <span>▼</span></a>
<ul class="depth1-list">
<li><a href="#">회사소개</a></li>
<li><a href="#">제품소개</a></li>
<li><a href="#">연구</a></li>
<li><a href="#">채용정보</a></li>
</ul>
</div>
<ul class="depth2">
<li>></li>
<li><a href="#">경영철학</a></li>
<li><a href="#">인사말</a></li>
<li><a href="#">연혁</a></li>
<li><a href="#">오시는길</a></li>
</ul>
</nav>