body{color:#1f2328;background:#f6f7f9;margin:0;font:15px/1.5 system-ui,sans-serif}header{color:#fff;background:#2d2f33;align-items:center;gap:24px;padding:12px 16px;display:flex}nav{gap:16px;display:flex}nav a{color:#c8ccd2}main{max-width:720px;margin:0 auto;padding:16px}