body {
    font-family: sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background: #f4f4f4;
    color: #333;
}

header {
    background: #333;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

main {
    padding: 1rem;
    max-width: 800px;
    margin: auto;
}

footer {
    text-align: center;
    padding: 1rem;
    background: #333;
    color: #fff;
    position: absolute;
    bottom: 0;
    width: 100%;
}