:root{font-family:system-ui,sans-serif}body{margin:0;padding:1rem;background:#fafafa;color:#222}main{max-width:720px;margin:0 auto}button{cursor:pointer;padding:.5rem 1rem}input,select,textarea{font:inherit;padding:.4rem;margin:.25rem 0}label{display:block;margin:.5rem 0}fieldset{border:1px solid #ccc;padding:.5rem 1rem}