JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container">
    
    <div id="left">
        <h3>Column 1</h3>
    </div>

    <div id="middle">
        <h3>Column 2</h3>
    </div>

    <div id="right">
        <h3>Column 3</h3>
    </div>
    
</div>

CSS

#left {
 background-color: red;  
    float:left;
     width:200px;
}

#middle {
  background-color: salmon; 
   float:left;
    width:200px;
}

#right {
 background-color: pink;  
   float:left; 
    width:200px;
}