JSFiddle - React, Tailwind, and code Playground

HTML

<section>
  <div>Some Text Here</div>
  <div>More content</div>
</section>

CSS

section {
    width: 100%;    
}

div {
    height: 50px;   
    padding: 5px;    
}

div:first-child {
    float: left;
    width: auto;
    background-color: #777;
}
div:last-child {
    background-color: #77f;
    width: auto;
}