JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrapper">
  <div class="item">12345</div>
  <div class="item">12345</div>
  <div class="item">12345</div>
  <div class="item">12345</div>
  <div class="item">12345</div>
  <div class="item">12345</div>
  <div class="item">12345</div>
  <div class="item">12345</div>
  <div class="item">12345</div>
</div>

CSS

.wrapper {
display: flex;
flex-wrap: wrap;
}
.item {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 33.33334%;
}
.item:hover {
  background-color: pink;
  border: none;
  border-radius: 20px;
}