JSFiddle - React, Tailwind, and code Playground

HTML

<img src="http://www.kidsmathgamesonline.com/images/pictures/shapes/rectangle.jpg" class="header"/>			
<div class="body-middle">
    
</div>

CSS

.header
{
	width:100%;		
	height:auto;
	padding:0px;
	margin:0px;
}

.body-middle
{
	height:50px;
	width:100%;
	margin:0 auto;	
	
	background:url('http://www.clipartsfree.net/vector/large/simple_green_rectangle_Vector_Clipart.png') 0 0 repeat;
	background-size:contain;
	background-position:center top;
}