:root{color:#142016;background:#f4f7f2;font-family:Segoe UI,sans-serif}body{margin:0}.page{max-width:40rem;margin:0 auto;padding:1.5rem}header{display:flex;align-items:center;justify-content:space-between;gap:1rem}nav{display:flex;align-items:center;gap:.75rem}button{font:inherit}main{margin-top:3rem}h1{margin:0 0 .5rem;font-size:2rem}