body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #000000;
    color: #000000;
    }
    
    header {
    background-color: #f70000;
    color: white;
    padding: 20px;
    text-align: center;
    }
    
    nav ul {
    list-style-type: none;
    padding: 0;
    background-color: #333;
    
    overflow: hidden;
    margin: 0;
    }
    
    nav ul li {
    display: inline;
    margin-right: 10px;
    }
    
    nav ul li a {
    color: white;
    text-decoration: none;
    padding: 14px 20px;
    display: inline-block;
    }
    
    nav ul li a:hover {
    background-color: #111;
    }
    
    main {
    padding: 20px;
    }
    
    section {
    margin-bottom: 20px;
    background: white;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    }
    
    footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 10px;
    position: fixed;
    bottom: 0;
    width: 100%;
    }