JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container">
    <div id="firstDiv">FIRST Div inside CONTAINER</div>
    <div id="secondDiv">SECOND Div inside CONTAINER</div>
</div>

CSS

body{
    width: 700px;
    margin: 20px auto;
}
#container {
    border: 5px solid orange;       
}
#firstDiv{
    border: 5px solid blueviolet;    
    width: 250px;    
    float:left;
}
#secondDiv{
    border: 5px solid brown;       
}