body {
    background-color: #001f3f;
    color: #fff;
    font-family: 'Segoe UI', Arial, sans-serif;
}

h1, h2, p, center {
    color: #fff;
    font-family: 'Segoe UI', Arial, sans-serif;
}

a {
    color: #fff;
    background-color: salmon;
    padding: 10px 18px;
    border: none;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
    margin: 6px 4px 6px 0;
    font-size: 16px;
    font-family: 'Segoe UI', Arial, sans-serif;
    transition: background 0.2s;
}
a:hover {
    background-color: #218838;
}