JSFiddle - React, Tailwind, and code Playground

HTML

<div class='image'>
    <img src="http://www.hdwallpapers.in/walls/abstract_color_background_picture_8016-wide.jpg" />
</div>
<div class='content'>Content</div>

CSS

html, body{
     margin: 0;
    height: 100%;
}

.image{
    width:100%;
    height:100%;
}

.image img{
    width:100%;
    height:100%;
}
.content {
    width:100%; height: 100px;
}