JSFiddle - React, Tailwind, and code Playground

HTML

<div class="overflow">
    <div class="content">
        FoobarFoobarFoobarFoobarFoobarFoobarFoobarF
    </div>
</div>

CSS

.overflow {
    width: 400px;
    padding: 15px;
    overflow-y: auto;
    border: 1px solid black;
}


.content {    
    background: red;
    width:800px;
     display:inline-block;
}