JSFiddle - React, Tailwind, and code Playground

by anup1986

HTML

<div id="dev">
<span>Some text</span>
</div>

CSS

#dev {
  position: relative;
  height: 100px;
  width: 250px;
  background-color: #c9c9c9;
  padding: 5px;
}

#dev span {
  font-weight: bold;
}

#dev:after {
  display: block;
  position: absolute;
  height: 2px;
  width: 90%;
  left: 50%;
  margin-left: -45%;
  
  bottom: 2px;
  border-bottom: 1px solid red;
  content: ' ';
}

JavaScript

var apa = [1, 2, 3];
var bpa = [4, 5, 6];
var cpa = [...apa, ...bpa];
console.log(cpa);