JSFiddle - React, Tailwind, and code Playground

HTML

<div id="one">

</div>
    
<div id="two">
        
</div>

CSS

#one {
 width: 100px;
    height: 200px;
background: red; 
float:left;    
}

#two {
background:blue;
height: 200px;
margin-left:100px;    
}