JSFiddle - React, Tailwind, and code Playground

by Hashem Qolami

HTML

<div id="outer">
    <div id="inner">
        <ul>
            <li>1</li>
            <li>2</li>
            <li>3</li>
            <li>4</li>
            <li>5</li>
            <li>6</li>
            <li>7</li>
            <li>8</li>
            <li>9</li>
            <li>10</li>
        </ul>
    </div>
</div>
<button onClick="toggleOuterHeight();">toggle outer div height</button>

CSS

#outer {
    background-color: #1abc9c;
    height: 400px;
    position: relative;
    overflow: auto;
    text-align: center;
    font-size: 0;
}

#outer:after {
    content: "";
    display: inline-block;
    height: 100%;
    vertical-align: middle;
}

#inner {
    background-color: #16a085;
    height: 250px;
    width: 250px;
    display: inline-block;
    vertical-align: middle;
    font-size: 16px;
}

#inner ul {
    margin: 0;
}

#inner ul li {
    line-height: 25px;
}

JavaScript

toggleOuterHeight = function() {
    if ($('#outer').css('height') == '400px') {
        $('#outer').css('height','200px');
    } else {
        $('#outer').css('height','400px');
    }
}