JSFiddle - React, Tailwind, and code Playground

HTML

<div id="d1"></div>
<div id="d2"></div>
<div id="d3"></div>

CSS

#d1,#d3{
    float:left;
    background-color:red;
    width:10%;
    height:300px;
}
#d2{
    float:left;
    background-color:blue;
     
    height:300px;
}