JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">

  <h1 class="title">HEADER</h1>

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

     <div class="box__item empty"></div>
     <div class="box__item empty"></div>
     <div class="box__item empty"></div>
  </div>

</div>

CSS

body{
  margin: 0;
  padding: 0;
}

.empty{
  opacity: 0;
  visibility: hidden;
  height: 0 !important;
  max-height: 0;
  min-height: 0 !important;
  padding-bottom: 0;
  padding-top: 0;
  margin-top: 0;
  margin-bottom: 0;
  -webkit-box-ordinal-group: 2;
  -ms-flex-order: 1;
  order: 1;
}

.container{
  max-width: 600px;
  margin: 0 auto;
}

.box{
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  margin: 0 auto;
  width: calc(100% + 30px);
  margin-left: -15px;
}

.box__item{
  width: 100px;
  max-width: 100%;
  height: 60px;
  background-color: red;
  flex-grow: 1;
  margin: 0 15px 30px;
}