JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container"> 
    <div class="row"> 
        <div class="span12"><img src="img/logo.png" width="100px">
        </div> 
        <div class="block">content</div>
    </div>
</div>

CSS

body {
    background: yellow;
}

div {
    width: 100%;
}

.container {
    background: grey;
    height: 400px;
    padding-top: 100px;
}

.row {
    background: yellow;
    height: 250px;
    padding-top: 50px;
}

.block {
    background: white;
    height: 100px;
}