JSFiddle - React, Tailwind, and code Playground

HTML

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

CSS

.bigDiv {
    background-color:#aaa;
    display:inline-block;
}

.item {
    height:100px;
    width:320px;
    background-color:#000;
    float:left;
    margin:10px;
}