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

header{
    background-color: #333;
    color: #fff;
    padding: 20px;
    text-align: center;
}

h1 {
    margin: 0;
}

main {
    padding: 20px;
}

section {
    margin-bottom: 30px;
}

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