JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrap">
  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>

  <div class="random"></div>
</div>

CSS

@import url('https://fonts.googleapis.com/css2?family=Neucha&display=swap');


* {
  box-sizing: inherit;
}

html {
  box-sizing: border-box;
}

body {
  font-family: 'Neucha', cursive;
}

.wrap {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
  width: 80%;
  margin-left: auto;
  margin-right: auto;
}

.random {
  height: 100px;
  background: #312E83;
}