body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header {
    background-color: #007bff; /* Blue color */
    color: #fff;
    padding: 20px;
    text-align: center;
}
 nav ul {
            list-style-type: none;
            margin: 0;
            padding: 0;
            text-align: center;
        }
        
        nav ul li {
            display: inline;
            margin-right: 20px;
        }
        
        nav ul li a {
            text-decoration: none;
            color: #333;
            font-size: 18px;
            transition: all 0.3s ease;
        }
        
        nav ul li a:hover {
            color: #fff;
            background-color: #555;
            border-radius: 5px;
            padding: 5px 10px;
        }


main {
    padding: 20px;
}

footer {
    background-color: #007bff; /* Blue color */
    color: #fff;
    text-align: center;
    padding: 10px;
    position: fixed;
    bottom: 0;
    width: 100%;
}