JSFiddle - React, Tailwind, and code Playground

HTML

<div class="div1">This is first div.</div>
<div class="div2">This is second div.</div>

CSS

body {
            display:flex;
            flex-flow: column;
        }
        .div1 {
            order:2;
        }
        .div2 {
            order:1;
        }