JSFiddle - React, Tailwind, and code Playground

HTML

<div id="progressbar">
    <div></div>
</div>

CSS

body{
    background-color: #636363;
    padding: 1em;
}  
#progressbar {
    background-color: #20201F;
    border-radius: 20px; /* (heightOfInnerDiv / 2) + padding */
    padding: 4px;
}
#progressbar > div {
    background-color: #F7901E;
    width: 48%; /* Adjust with JavaScript */
    height: 16px;
    border-radius: 10px;
}