body {
    font-family: Arial, sans-serif;
    background-color: #f5f7fa;
    color: #333;
    margin: 0;
    padding: 0;
}
header, footer {
    background-color: #001f3f;
    color: white;
    padding: 1em;
    text-align: center;
}
main {
    padding: 2em;
    text-align: center;
}
a.button {
    display: inline-block;
    padding: 0.75em 1.5em;
    background-color: #0074D9;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 1em;
}
a.button:hover {
    background-color: #005fa3;
}