JSFiddle - React, Tailwind, and code Playground

HTML

<div class="outer">
    <div class="inner"></div>
    <div class="content"></div>
</div>

CSS

.outer {
    width: 200px;
    height: 200px;
    overflow: auto;
    background: red;
}
.inner {
    position: absolute;
    width: 200%;
    height: 100px;
    z-index: 1;
    background: rgba(255, 255, 0, 1);
}
.content {
    width: 50px;
    height: 300px;
    background: rgba(0, 0, 0, .1);
    border: 10px solid rgba(255, 255, 255, .5);
}