JSFiddle - React, Tailwind, and code Playground

HTML

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

CSS

.wrapper{
    background: red;
    width: 80%;
    overflow: hidden;
    height: 100%;
    text-align: justify;
}
.wrapper:after{
  content: '';
  display: inline-block;
  width: 100%;
}

.item{
    background: blue;
    width: 100px;
    height: 40px;
    margin: 4px;
    
    display: inline-block;
}