body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

header {
    background-color: #333;
    color: #fff;
    padding: 10px 0;
    text-align: center;
}

nav {
    margin: 10px 0;
    text-align: center;
}

nav a {
    color: #fff;
    padding: 10px 15px;
    text-decoration: none;
}

article {
    padding: 20px;
}

h1, h2, h3 {
    color: #333;
}

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 10px 0;
    position: absolute;
    width: 100%;
    
}