JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrapper">
    <div class="container">
    
        <div class="header">
            Header
        </div>
        
        <div class="body">
          Content Area                    
        </div>
        
        
    </div>

    <div class="footer">
        Footer
    </div>

</div>

CSS

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

.wrapper{
    min-height:100%;
    position:relative;
}

.container{
    width:960px;
    margin:0 auto;
    padding-bottom:100px;
}

.header{
    height:100px;
    background-color:#066;
}

.footer{
    position:absolute;
    bottom:0;
    height:100px;
    background-color:#006;
    width:100%;
}