JSFiddle - React, Tailwind, and code Playground

by jpeter06

HTML

<ul class="top_icons">
    <li>
        <a onclick="show(this)"> A </a>
        <ul>
            <li>Uno</li>
            <li>Dos</li>
        </ul>
    </li>
    <li>
        <a onclick="show(this)"> B </a>
        <ul>
            <li>tres</li>
            <li>cuatro</li>
            <li>cinco</li>
            <li>cinco</li>
            <li>cinco</li>
            <li>cinco</li>
            <li>cinco</li>
        </ul>
    </li>
</ul>

CSS

.top_icons{
    color:gray;
    float:right;
}

.top_icons ul { display: block;}

.top_icons > li{
    float: left;
    list-style: none;
    outline: none;
    margin-left: 4px;
    cursor:pointer;
}   

.top_icons li ul{
    width: 200px;
   
    padding: 0px;
    margin: 0px;
    overflow: hidden;
    position: absolute;
    background-color: white;
    border-radius: 2px;
    margin: 12px 0px 0px -190px;
    box-shadow: 0px 1px 4px 0px rgba(43, 59, 93, 0.6);
}
.top_icons li ul{
    transform: perspective(500px) rotateX(-90deg) rotateY(0deg) rotateZ(0deg);
    transition: all 0.5s ease;
}

.top_icons li ul.show{
    height: auto;
    transform: perspective(500px) rotateX(0deg) rotateY(0deg) rotateZ(0deg);

}

.top_icons li ul li{
  margin-left:4px;
}

.top_icons li ul li:hover{
  color:red;
  background:#eee;
}

JavaScript

function show(obj){
    console.log(obj.nextElementSibling);
    obj.nextElementSibling.classList.toggle('show');
}