:root{font-family:system-ui,sans-serif;color:#111;background:#fafafa}body{margin:0}main{max-width:40rem;margin:2rem auto;padding:0 1rem}.erro{color:#b00020}.hero h1{font-size:2rem}button,a.botao{display:inline-block;padding:.6rem 1rem;background:#111;color:#fff;border:0;border-radius:6px;text-decoration:none;cursor:pointer}ul{padding-left:1.2rem}