JSFiddle - React, Tailwind, and code Playground

HTML

<div>A</div><div>B</div><div>C</div>

CSS

body {
    text-align: center;
}

div {
    display: block;
    background: red;
    padding: 10px 20px;
    margin: 0 0 10px;
}

@media screen and (min-width: 400px) {
    div {
        display: inline-block;
    }
    div:first-child {
        float: left;
    }
    div:last-child {
        float: right;
    }
}