body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #f9f9f9;
    display: flex;
    flex-direction: column;
    align-items: center;
}
header h1 {
    font-size: 2rem;
    font-weight: bold;
    color: orange;
    text-align: center;
    margin: 1rem 0;
}
#grid-container {
    display: grid;
    grid-template-columns: repeat(100, 16px);
    grid-template-rows: repeat(100, 16px);
    gap: 1px;
}
footer {
    margin: 2rem 0;
}
footer a {
    color: #333;
    text-decoration: none;
    font-weight: bold;
}