body{font-family:system-ui,sans-serif;margin:0;color:#11253a;background:#f6f9fc}main,header{max-width:70rem;margin:auto;padding:1.5rem}header{display:flex;gap:1rem;flex-wrap:wrap;align-items:center}nav{flex:1}a{color:#143a5e}button{padding:.5rem 1rem}main{line-height:1.5}