:root{font-family:Arial,sans-serif;line-height:1.4;color:#000;background-color:#fff}a{color:#00f;text-decoration:underline}body{margin:0}#root{width:100%}h1{font-size:2em}button{border:1px solid #000;padding:8px 12px;font-size:1em;font-family:inherit;background-color:#fff;color:#000;cursor:pointer}button:hover{background-color:#eee}