JSFiddle - React, Tailwind, and code Playground

HTML

<div class="parent">
    <div class="child">
        Text Block 1
    </div>
</div>

<div class="parent">
    <div class="child">
        Text Block 2
    </div>
</div>

CSS

.parent, .child{
    width:100px;
    height:20px;
    background:#ccc;
    margin:4px 0px;
}
.color{
    background:red;
    color:white;
}

JavaScript

$('.parent').hover(function(){
$(this).find('.child').toggleClass('color')
});