JSFiddle - React, Tailwind, and code Playground

HTML

<div class="parent">
<div class="img">
</div>
</div>

CSS

div.parent {
  width:200px;
  height:200px;
  background-color:red;
}
div.img {
  width:100px;
  height:100px;
  background-color:blue;
}

div.parent:hover div.img {
  background-color:green;
}
div.parent:hover{
    background-color:yellow;
}