JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrapper">
  <div class="overlay"></div>
  <div class="content">I am a content</div>
</div>

CSS

div.wrapper{
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  width: 300px;
  height: 300px;
}

div.overlay{
  position:absolute;
  width: 100%;
  height: 100%;
  
}

div.overlay:hover{
  background-color: #0000FFAA;
}

div.content{
  background-color: red;
}