JSFiddle - React, Tailwind, and code Playground

HTML

<div class="cont">
    <div class="grid">
        <img src="https://i.pinimg.com/236x/3e/ac/17/3eac175f27a976f4adefed26caa272ae.jpg" alt="" class="grid-item">
        <img src="https://i.pinimg.com/236x/65/12/b7/6512b77ee8a02612fd6bf41310253e4c.jpg" alt="" class="grid-item">
        <img src="https://i.pinimg.com/236x/4d/60/c0/4d60c06bcce9905fc00abc6bd1e38df7.jpg" alt="" class="grid-item">
        <img src="https://i.pinimg.com/236x/33/cb/3e/33cb3ef7d67adef0303cf5d636c6f345.jpg" alt="" class="grid-item">
        <img src="https://i.pinimg.com/236x/36/0d/96/360d96cb95817126d8b34b4e38040bde.jpg" alt="" class="grid-item">
        <img src="https://i.pinimg.com/236x/c9/f2/c7/c9f2c71a7b58b575ade8ace488debbcd.jpg" alt="" class="grid-item">
        <img src="https://i.pinimg.com/236x/65/12/b7/6512b77ee8a02612fd6bf41310253e4c.jpg" alt="" class="grid-item">
        <img src="https://i.pinimg.com/236x/33/cb/3e/33cb3ef7d67adef0303cf5d636c6f345.jpg" alt="" class="grid-item">
        <img src="https://i.pinimg.com/236x/c9/f2/c7/c9f2c71a7b58b575ade8ace488debbcd.jpg" alt="" class="grid-item">
        <img src="https://i.pinimg.com/236x/b7/71/e7/b771e7fd529d7356a11c62625b238ce7.jpg" alt="" class="grid-item">
        <img src="https://i.pinimg.com/236x/65/12/b7/6512b77ee8a02612fd6bf41310253e4c.jpg" alt="" class="grid-item">
        <img src="https://i.pinimg.com/236x/c9/f2/c7/c9f2c71a7b58b575ade8ace488debbcd.jpg" alt="" class="grid-item">
        <img src="https://i.pinimg.com/236x/a8/7c/bd/a87cbde5dc57e058faf631afb6b578ec.jpg" alt="" class="grid-item">
        <img src="https://i.pinimg.com/236x/c9/f2/c7/c9f2c71a7b58b575ade8ace488debbcd.jpg" alt="" class="grid-item">
        <img src="https://i.pinimg.com/236x/d0/ad/42/d0ad424a08fe712fcc9eed4a45a032f9.jpg" alt="" class="grid-item">
        <img src="https://i.pinimg.com/236x/c9/f2/c7/c9f2c71a7b58b575ade8ace488debbcd.jpg" alt="" class="grid-item">
        <img...

CSS

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.cont {
  margin-top: 20px;
  max-width: 1260px;
  margin-left: auto;
  margin-right: auto;
}

.grid-item {
  margin: 5px;
  max-width: 25%;
  border-radius: 5px;
}

JavaScript

var grid = document.querySelector('.grid');
var msnry = new Masonry( grid, {
  itemSelector: '.grid-item'
});