JSFiddle - React, Tailwind, and code Playground

HTML

<div class="bigbox">
      <div class="box"></div>
      <div class="box"></div>
      <div class="box"></div>
      <div class="box"></div>
      <div class="box"></div>
      <div class="box"></div>
    </div>

CSS

.bigbox {
      width:1024px;
      height:600px;
      background-color:#000000;
      overflow-y:hidden;
  font-size:0;
    }
    .box{
      width:500px;
      height:500px;
     display:inline-block;
  vertical-align:top;
      background-color:#AAAAAA;
      margin:5px;
    }