* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    color: #333;
    background-color: #f2f2f2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    text-align: center;
}

header {
    background-color: #006400;
    color: white;
    width: 100%;
    padding: 1rem 0;
}

header h1 {
    font-size: 2rem;
}

main {
    padding: 2rem;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    max-width: 600px;
}

.announcement h2 {
    font-size: 1.8rem;
    color: #006400;
    margin-bottom: 1rem;
}

.announcement p {
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

footer {
    background-color: #333;
    color: white;
    padding: 1rem;
    margin-top: 2rem;
    width: 100%;
    text-align: center;
}