JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    <aside></aside>
    <section></section>
</div>

CSS

div{
    max-width:957px;
    margin:0 auto;
}
section{
    height:200px;
    background:green;
    margin-right:200px
}
aside{
    width:200px;
    float:right;
    height:200px;
    background:red;
}