:root{color:#222;background:#fff;font-family:system-ui,sans-serif;line-height:1.5}body{margin:0}.site{max-width:64rem;margin:0 auto;padding:1.5rem}header{border-bottom:1px solid #ddd;padding-bottom:1rem}nav{flex-wrap:wrap;gap:1rem;margin-top:1rem;display:flex}nav a[aria-current=page]{font-weight:700}main{padding-block:2rem}footer{border-top:1px solid #ddd;padding-top:1rem}a{color:#234e75}