JSFiddle - React, Tailwind, and code Playground

HTML

<div><p>A</p></div>
<div><p>B</p></div>

CSS

div{
    width:200px;
    height:200px;
}
div:nth-child(1){
    background-color: #F52C6F; 
    border-bottom: 10px solid black;
    margin-bottom: 20px;
}
div:nth-child(2){
    background-color: #0ECCCC; 
    border-top: 10px solid yellow;
    margin-top: 25px;
}