JSFiddle - React, Tailwind, and code Playground

HTML

<div id="header">
            header
        </div>
        <div id="wrapper" class="clearfix">
            <div id="left">
                left
            </div>
            <div id="content">
                content<br/>
                content<br/>
                content<br/>
                content<br/>
                content<br/>
                content<br/>
                content<br/>
                content<br/>
                content<br/>
                content<br/>
                content<br/>
                content<br/>
                content<br/>
                content<br/>
                content<br/>
            </div>
        </div>

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

CSS

.clearfix:before,
    .clearfix:after {
        content:"";
        display:table;
    }
    .clearfix:after {
        clear:both;
    }
    /* For IE 6/7 (trigger hasLayout) */
    .clearfix {
        zoom:1;
    }

body{
margin:0;
padding:0;
}
#header{
margin:0 auto;
width:100%;
background:#efffff;
height:100px;
}
#footer{
margin:0 auto;
clear:both;
width:100%;
background:#ccc;
height:100px;
}
#wrapper{
width:990px;
margin:0 auto;
background:#000;
display:block;
}
#left{
margin:0 0 0 15px;
background:#eeffee;
width:200px;
float:left;
}
#content{
margin:0 15px 0 0;
background:#eeeeee;
width:760px;
float:left;
height:100%;
    display: block;
}