JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container blue">
    <div class="container">
        <div class="content"></div>
        <div class="content"></div>
        <div class="content"></div>
        <div class="content"></div>
        <div class="content"></div>
        <div class="content"></div>
    </div>
</div>

CSS

.content{
    width: 20px;
    height: 20px;
    background: red;
    margin: 10px;
    float: left;
}

.container{
    background: green;
    display: block;
    height: auto;
    float: left;
    margin: 10px;
}

.blue{
    background: blue
}