body{font-family:Arial,sans-serif;margin:0;padding:0;background:linear-gradient(#fffc,#fffc),url(/background.jpeg) no-repeat center center fixed;background-size:cover}#app{max-width:800px;margin:0 auto;padding:2rem;background-color:#fff;min-height:100vh;box-shadow:0 0 10px #0000001a}h1{color:#333;text-align:center}#hamburger{position:absolute;top:1rem;left:1rem;font-size:2rem;cursor:pointer;color:#000;z-index:10}nav{text-align:center;margin:2rem 0;background-color:#e0e0e0;padding:1rem;border-radius:5px}#nav-menu a{margin:.5rem 0;color:#007bff;text-decoration:none}#nav-menu a:hover{text-decoration:underline}#content{text-align:left}h2{color:#555}