JSFiddle - React, Tailwind, and code Playground

HTML

<input id="round" />

CSS

body {
    background-color: #666;
}

#round {
    background-color: white;
    border-radius: 15px;
    height: 20px;
    width: 200px;
    border: 1px solid #aaa;
    padding: 3px 10px;
    margin: 10px;
    box-shadow: inset 0 2px 2px rgba(0, 0, 0, 0.15);
    font-family: Arial;
    font-weight: bold;
}