JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    <span></span>
</div>

CSS

div {
    display: block;
    width: 150px;
    height: 300px;
    overflow-y: hidden;
    overflow-x: visible;
    background-color: #000;
    z-index: 1;
    
}
div span {
    display: block;
    width: 200px;
    height: 450px;
    background-color: #ff0000;
    z-index: 2;
    margin-left: 20px;
}