JSFiddle - React, Tailwind, and code Playground

HTML

<div class="div_fixed">FIXED</div>
<div class="other_content">
    content goes here<br/>
    content goes here<br/>
    content goes here<br/>
</div>

CSS

div { color: #fff } 
.div_fixed { position: fixed; width: 100%; height: 100px; background: #000 }
.other_content { background: #f00; height: 5000px; color: #fff; padding-top: 100px; }