JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
<div class="yellow">sometext</div>
<div class="green">more text here more text here more text here more text here more     text here more text here more text here more text here more text here more text     here </div>
<div class="spacer"></div>
</div>

CSS

.yellow {
background-color: #00ff00;
margin: 2px;
float: left;
width: 100px;
text-align: center;
}

.green{
background-color: yellow;
    overflow: hidden;
      }

.container {
width: 30%;
    background-color: #00ff00;
}

.spacer {
 clear: both;
}