JSFiddle - React, Tailwind, and code Playground

HTML

<body>
    <div>
        
    </div>
</body>

CSS

body
{
    background-image: URL("http://3.bp.blogspot.com/-s9WZXQ45zWQ/T0grSt8dkKI/AAAAAAAAQrI/Nt6JVAi8h5E/s1600/yellowdotsbackground9.jpg");
    width:100%;
}

div
{
    margin: 0 50%;
    padding:0px;
    width:300px;
    height:300px;
    border: 3px solid black;
    border-radius:50%;
    background-color:red;
}