JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <div class="floater">
    </div>
</div>

CSS

.floater {
    background-color: red;
    float: left;
    width: 50px;
    height: 100px;
}
.container {
    height: 50px;
    background-color: blue;
    overflow: hidden;
}