JSFiddle - React, Tailwind, and code Playground

HTML

<div class="about-team">
    <div class="client">
        <div class="about-team-left"> <a href="#"><img src="http://placehold.it/150x150" /></a>

        </div>
        <div class="about-team-right"> <span>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...</span>  <a id="rm">READ MORE</a>

            <div class="readmore">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

.readmore {
    display: none;
}
a:hover + div.readmore {
    display: block;
    height: 100px;
    width: 200px;
}