body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

header {
    background-color: #007bff;
}

h1 {
    margin: 0;
    font-size: 2.5em;
}

h2 {
    margin-top: 0;
}

ul {
    padding-left: 0;
}

ul li {
    padding: 0.5em 0;
}

footer {
    background-color: #343a40;
    color: white;
}