JSFiddle - React, Tailwind, and code Playground

HTML

<div id="all">
    <div id="left">left</div>
    <div id="main">
        <div id="all_maim">
            main main main main main main main main main main main main main main main main main main main main main main main main main main main
        </div>
    </div>
    <div id="box">box</div>
    <div id="wall">wall wall wall wall wall wall wall wall 
    </div>
</div>

CSS

#all{
    max-width:600px;
    margin:auto;
}
#left{
    width:200px;
    background:#fcf;
    float:left;
}
#main{
    margin-left:200px;
    height:1px;
}
#all_maim{
    float:right;
    background:#069;    
}
#box{
    width:200px;
    background:#cfc;
    float:left;
}
#wall{
    background:#f63;
    clear:right;
}