JSFiddle - React, Tailwind, and code Playground

HTML

<div class="hoverdiv">
    <div>one</div>
    <div>two</div>
    <div>three</div>
    <div>four</div>
</div>

CSS

.hoverdiv:hover *{
    background-color: green;
}
.hoverdiv div{
    margin: 5px;
}