body {
    background-color: #e6f0ff;
    color: #1a1a1a;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
}

header {
    background-color: #4a90e2;
    color: #ffffff;
    padding: 16px;
    border-radius: 0 0 12px 12px;
    text-align: center;
}

a {
    color: #0047b3;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

a.button {
    background-color: #4a90e2;
    color: #ffffff;
}
a.button:hover {
    background-color: #357ABD;
}

article {
    background-color: #f0f8ff;
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 20px;
}