JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <div class="box1"></div>
    <div class="box2"></div>
</div>

CSS

.container{
    background-color:blue;
    height:200px;
    width:200px;
}
.box1{
    height:30px;
    width:30px;
    background-color:yellow;
    padding:20px;
}
.box2{
    height:30px;
    width:30px;
    background-color:red;
    margin:20px;
}