body {
    background-color: #e8f5e9; 
    color: #333333; 
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 10px;
}


header h1 {
    text-align: center;
    padding: 20px 0;
    color: #1b5e20; 
}


nav {
    text-align: center;
    padding: 10px 0;
    border-top: 2px solid #1b5e20;
    border-bottom: 2px solid #1b5e20;
    margin-bottom: 25px;
}


nav a {
    text-decoration: none;
    color: #000080; 
    padding: 0 18px;
    font-weight: bold;
    font-size: 1.1em;
}


footer {
    text-align: center;
    margin-top: 40px;
    padding-top: 15px;
    border-top: 1px dashed #999;
    font-size: 0.9em;
    color: #666;
}


main {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
}


img {
    max-width: 100%;
    height: auto;
    display: block; 
    margin: 15px auto;
}


figure {
    margin: 25px 0;
    padding: 15px;
    border: 1px solid #ddd;
    text-align: center;
    background-color: #ffffff;
}

figcaption {
    font-style: italic;
    padding-top: 8px;
    color: #888;
}