JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li>1</li>
    <li>2</li>
    <li>3</li>
    <li>4</li>
    <li>5</li>
    <li>6</li>
    <li>7</li>
</ul>

CSS

ul {
    height: 5em;
    overflow: auto;
}

JavaScript

document.querySelector("li:nth-child(6)").scrollIntoView();