JSFiddle - React, Tailwind, and code Playground

by il kamil

HTML

<div class="scrollable">
    <ul class="menu">
        <li>Menu
            <ul class="submenu">
                <li>Submenu</li>
                <li>Submenu</li>
                <li>Submenu</li>
            </ul>
        </li>
        <li>Menu
            <ul class="submenu">
                <li>Submenu</li>
                <li>Submenu</li>
                <li>Submenu</li>
            </ul>
        </li>
        <li>Menu
            <ul class="submenu">
                <li>Submenu</li>
            </ul>
        </li>
        <li>Menu
            <ul class="submenu">
                <li>Submenu</li>
                <li>Submenu</li>
                <li>Submenu</li>
            </ul>
        </li>
        <li>Menu
            <ul class="submenu">
                <li>Submenu</li>
                <li>Submenu</li>
                <li>Submenu</li>
            </ul>
        </li>
    </ul>
</div>

CSS

ul {
    margin: 0;
    padding: 0;
    list-style-type: none;
}
.scrollable {
    position: fixed;
    top: 0;
    left: 0;
}
ul.menu {
    overflow: hidden;
    width: 100px;
    height: 100px;
}
ul.menu > li {
    color: #ff0000;
}
li {
    background-color: #dddddd;
    line-height: 50px;
    height: 50px;
    border-bottom: 1px solid #fff;
    display: block;
}
.submenu {
    width: 200px;
    display:none;
    margin: -45px 0 0 70px;
    border: 1px solid #000;
    position: absolute;
    z-index: 100;
}
.menu li:hover .submenu {
    display: block;
}