JSFiddle - React, Tailwind, and code Playground

HTML

<div id="header"></div>
    <div id="hmenu">
    </div>        
    <div id="content">
        <img src="https://www.google.nl/images/srpr/logo3w.png" alt="background image" id="bg" />
        Content, content, content, content, content, content, content, content, content, 
    </div>
</div>

CSS

div#header {
    z-index=1;
    height:30px;
    width:100%;
}

div#hmenu {
    z-index=1;
    height:80px;
    background-color:#007980;
}

div#content {
    position: relative;
    float:right;
    width: 150px;
    height: 200px;
    border: 2px #F00 dashed;
}

img#bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}