JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
<body>
  <div id="wrapper">
    <div id="header"></div>
    <div id="content"></div>
    <div id="footer"></div>
  </div>
</body>

CSS

html,
body {
margin:0;
padding:0;
height:100%;
}
#wrapper {
min-height:100%;
position:relative;
}
#header {
padding:10px;
background:#5ee;
}
#content {
padding:10px;
padding-bottom:80px; /* Height of the footer element */
}
#footer {
width:100%;
height:80px;
position:absolute;
bottom:0;
left:0;
background:#ee5;
}