body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #ffffff;
}


header {
    background-color: #181818;
    color: rgb(255, 255, 255);
    padding: 10px 0;
    text-align: center;
}

header h1 {
    margin: 0;
}


nav ul {
    list-style-type: none;
    padding: 0;
}

nav ul li {
    display: inline;
    margin: 0 15px;
}

nav ul li a {
    color: rgb(148, 148, 148);
    text-decoration: none;
}


main {
    padding: 20px;
}

main section {
    background-color: rgb(255, 255, 255);
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}


footer {
    background-color: #181818;
    color: rgb(255, 255, 255);
    text-align: center;
    padding: 10px 0;
    position: fixed;
    bottom: 0;
    width: 100%;
}