Drop-list

Drop-list

Hello

Could anybody help me with adding drop-list in Zoho Navigation Menu?

<style>
    .droplink ul li:first-child {
  display: block;
}

.droplink ul li:not(:first-child) {
  display: none;
}

.droplink ul:hover li {
  display: block;
}
</style>

<div class="droplink">
<ul>
<li class="cat-item cat-item-12"><a href="/">Контакты</a></li>
<li class="cat-item cat-item-13">+7 (777) 777-01-01</li>
<li class="cat-item cat-item-14"><a href=" http://instagram.com/">Instagram</a></li>
<li class="cat-item cat-item-15"><a href=" http://vk.com/">VK</a></li>
<li class="cat-item cat-item-16"><a href="/">Facebook</a></li>
</ul>
</div>