JSFiddle - React, Tailwind, and code Playground

HTML

<div class="item">
  <p>
  hello
  </p>

</div>

CSS

.item {
    border: 2px dashed green;
    background-color: red;
    width: 100px;
    height: 100px;
    margin-left: 30px;
    margin-top: 30px;
}

.item :hover  {
   background-color: yellow;
}