JSFiddle - React, Tailwind, and code Playground

HTML

<div id="top">dgfhkgdf</div>
<div id="left">wefwef</div>
<div id="right">wefwefwef</div>

CSS

div {
    border: 1px solid #000;     
}

#top
{
    width:100%;
    height:150;
}

#left
{
    float: left;
    text-align:center;
    width: 20%;
}

#right
{
    float: left;
    text-align:center;
    width: 79%;
}