JSFiddle - React, Tailwind, and code Playground

HTML

<div id="wrapper">
    <div id="c1"></div><div id="c2"></div><div id="c3"></div>
</div>

CSS

div {
    margin:0;
    padding:0;
    border:0;
}

#c1, #c2, #c3 {
    display:inline-block;
    width: 33.3%;
    height:300px;
}

#c1 { background-color:red; }
#c2 { background-color:green; }
#c3 { background-color:blue; }