body {

    font-family: Arial, sans-serif;

    margin: 0;

    padding: 0;

    background: #f9f9f9;

    color: #333;

}


header {

    background: #4CAF50;

    color: white;

    padding: 15px;

    text-align: center;

}


nav ul {

    list-style-type: none;

    padding: 0;

}


nav ul li {

    display: inline;

    margin-right: 20px;

}


nav ul li a {

    color: white;

    text-decoration: none;

}


main {

    padding: 20px;

}


footer {

    background: #4CAF50;

    color: white;

    text-align: center;

    padding: 10px;

    position: fixed;

    bottom: 0;

    width: 100%;

}