JSFiddle - React, Tailwind, and code Playground

HTML

<div id="wrapper">
    <div id="c1">con1</div>
    <div id="c2">con2</div>
</div>

CSS

#wrapper{
    background:red;
}


#c1{
   float:left;
   background:red;
}


#c2{
    background:green;
}