body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #f5f5f5;
}

header {
    background: #2c3e50;
    color: white;
    padding: 15px;
}

header h1 {
    margin: 0;
}

nav a {
    color: white;
    margin-right: 15px;
    text-decoration: none;
}

.hero {
    background: #3498db;
    color: white;
    padding: 50px;
    text-align: center;
}

section {
    padding: 30px;
    background: white;
    margin: 10px;
    border-radius: 8px;
}

.announcement {
    background: #ecf0f1;
    padding: 10px;
    margin-top: 10px;
    border-left: 5px solid #3498db;
}

footer {
    text-align: center;
    padding: 15px;
    background: #2c3e50;
    color: white;
}