body {
    font-family: Arial, sans-serif;
    text-align: center;
    margin: 0;
    padding: 0;
    background-color: #f0f8ff;
    color: #333;
}
header {
    background-color: #1b3d21;
    color: white;
    padding: 20px 0;
}
main {
    padding: 20px;
}
footer {
    background-color: #333;
    color: white;
    padding: 10px 0;
    position: fixed;
    bottom: 0;
    width: 100%;
}
nav {
    margin-top: 20px;
}
nav a {
    color: #1b3d21;
    text-decoration: none;
    margin: 0 15px;
    font-weight: bold;
}
nav a:hover {
    text-decoration: underline;
}
.imgbox {
    display: grid;
    height: 100%;
}
.center-fit {
    max-width: 100%;
    max-height: 60vh;
    margin: auto;
}