body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f2f2f2;
}

header {
    background-color: #65b741;
    color: white;
    padding: 1em;
    text-align: center;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    display: inline;
    margin-right: 10px;
}

nav a {
    text-decoration: none;
    color: white;
}

/* Highlight the active menu item */
nav a.active {
    font-weight: bold;
}

.gallery {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    padding: 20px;
}

.image {
    margin: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.image img {
    width: 100%;
    height: auto;
    display: block;
}