JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <div class="box left" style="height:60px;">1</div>
    <div class="box right" style="height:80px;">2</div>
    <div class="box left" style="height:60px;">3</div>
    <div class="box right" style="height:60px;">4</div>
    <div class="box left" style="height:60px;">5</div>
    <div class="box right" style="height:60px;">6</div>
</div>

CSS

.box {background:#20abff; color:#fff; width:100px; margin: 0 0 5px 0;}
.left {float:left;}
        .right {float:right;}
        .container {width:205px;}