JSFiddle - React, Tailwind, and code Playground

HTML

<div class="box">
    <div class="title">Title 1</div>
</div>
<div class="box">
    <div class="title">Title 2</div>
</div>
<div class="box">
    <div class="title">Title 3</div>
</div>
<div class="box">
    <div class="title"></div>
</div>

CSS

.box{width:100%;height:400px;float:left;}
.title{width:100%;height:30px;float:left;background-color:#333;color:#fff;}