JSFiddle - React, Tailwind, and code Playground

HTML

<div id="Wrapper">
    <p>Above panel</p>
    <div id="Panel">Panel</div>
    <p>Below panel</p>
</div>

CSS

body { 
    margin: 3em;
}

#Wrapper {
    background: #aaa;
    width: 200px;
    padding: 10px;        
}

#Panel {
    width: 300px;
    background: green;
}