JSFiddle - React, Tailwind, and code Playground

by sstur

HTML

<div id="scroll-container">
    <div id="scroll-pane">
        <div id="fixed-pane">
            Test Me
        </div>
    </div>
</div>

CSS

#scroll-container {
    width: 200px;
    height: 200px;
    border: 1px solid #999;
    overflow: auto;
    position: relative;
}
#scroll-pane {
    height: 900px;
    background: #900;
}
#fixed-pane {
    position: fixed;
    width: 200px;
    height: 100px;
    background: #009;
    color: #fff;
}