JSFiddle - React, Tailwind, and code Playground

HTML

<div id="main">
    <div id="container">
        <div>Text 1</div>
        <br/>
        <div>Text 2</div>
        <br/>
        <div>Text 3</div>
        <br/>
        <div>Text 4</div>
        <br/>
        <div>Text 5</div>
        <br/>
        <div>Text 6</div>
        <br/>
        <div>Text 7</div>
        <br/>
        <div>Text 8</div>
        <br/>
        <div>Text 9</div>
        <br/>
        <div>Text 10</div>
        <br/>
    </div>
</div>

CSS

#main {
    width:100px;
    height:100px;
    overflow-y:auto;
}
.highlight {
    background-color:yellow;
}