body{font-family:Arial,sans-serif;margin:0;padding:0}header{display:flex;justify-content:space-between;align-items:center;padding:1rem;background-color:#333;color:#fff}.logo{max-height:50px}nav ul{list-style:none;display:flex;gap:1rem}nav a{color:#fff;text-decoration:none}main{padding:2rem}section{margin-bottom:2rem}footer{text-align:center;padding:1rem;background-color:#333;color:#fff}