JSFiddle - React, Tailwind, and code Playground

HTML

<div class="about-team-right">Just writing a quick note to tell you how very happy we are with our new addition to our family... Our "Molly" is such an adorable puppy... <a id="rm" onmouseover="show()" onmouseout="hide()">READ MORE</a>

    <div class="readmore1">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Tenetur, qui est quo consequuntur esse iure tempora. Hic tenetur nemo repudiandae quae unde sed aliquid deleniti ad! Facilis, reprehenderit culpa mollitia.</div></div>

CSS

.readmore1 {
    display: none;
}
.readmore1 {    
    height: 100px;
    width: 200px;
}

JavaScript

function show() {
document.getElementsByClassName('readmore1')[0].style.display = "block";
}
function hide() {
document.getElementsByClassName('readmore1')[0].style.display = "none";
}