*{margin:0;padding:0;box-sizing:border-box}
body{font-family:sans-serif;line-height:1.4}
header{background:orange;padding:10px;display:flex;align-items:center;gap:20px}
nav a{color:#000;text-decoration:none;margin-right:10px;font-weight:bold}
main{padding:20px}
footer{text-align:center;padding:10px;font-size:.8rem;background:#f4f4f4}