body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f9;
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
header {
    background-color: #0078d7;
    color: white;
    padding: 1rem;
    text-align: center;
}
nav {
    background-color: #005bb5;
    padding: 1rem;
    text-align: center;
}
nav a {
    color: white;
    text-decoration: none;
    margin: 0 1rem;
    font-size: 1.2rem;
}
nav a:hover {
    text-decoration: underline;
}
section {
    padding: 2rem;
    max-width: 1200px;
    margin: auto;
    flex: 1;
}
footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 1rem;
}
footer a {
    color: #0078d7;
    text-decoration: none;
}
footer a:hover {
    text-decoration: underline;
}
.overview {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}
.overview-item {
    background: white;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 1rem;
    width: calc(33.333% - 2rem);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    text-align: center;
}
.overview-item h3 {
    margin: 0.5rem 0;
    font-size: 1.2rem;
}
.overview-item p {
    font-size: 0.9rem;
    color: #555;
}
.overview-item a {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    background-color: #0078d7;
    color: white;
    text-decoration: none;
    border-radius: 4px;
}
.overview-item a:hover {
    background-color: #005bb5;
}
.hidden {
    display: none;
}