JSFiddle - React, Tailwind, and code Playground

HTML

<div id = "header">
</div>

CSS

#header{
    background-image: url('http://www.newton.ac.uk/files/covers/968361.jpg');
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: 100% 150px;

    top: 0px;
    height: 150px;
}