body {
    font-family: Arial, sans-serif;
    padding: 20px;
    background-color: #f4f4f4;
}
nav {
    margin-bottom: 20px;
}
nav form {
    display: inline-block;
    margin: 5px;
}
nav button {
    background-color: #4CAF50;
    color: white;
    padding: 10px 18px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}
nav button:hover {
    background-color: #45a049;
}
img {
    margin-top: 20px;
    max-width: 100%;
    height: auto;
}