body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background-color: #4CAF50;
    color: white;
    padding: 1rem;
    text-align: center;
}

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

nav ul li {
    display: inline;
    margin-right: 1rem;
}

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

nav ul li a:hover {
    text-decoration: underline;
}

main {
    padding: 2rem;
    text-align: center;
}

footer {
    background-color: #4CAF50;
    color: white;
    text-align: center;
    padding: 1rem;
    position: fixed;
    bottom: 0;
    width: 100%;
}

button, .button-link {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 5px;
}

button:hover, .button-link:hover {
    background-color: #45a049;
}

form {
    max-width: 400px;
    margin: 50px auto;
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
}

form input[type="text"], form input[type="password"], form input[type="email"] {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    box-sizing: border-box;
    border: 1px solid #ccc;
    border-radius: 5px;
}

form input[type="text"]:focus, form input[type="password"]:focus, form input[type="email"]:focus {
    border-color: #4CAF50;
    outline: none;
}

form label {
    color: #333;
    font-weight: bold;
}

form h2 {
    color: #4CAF50;
    margin-bottom: 20px;
}

/* Add the following CSS to control the image sizes */
img.img-small {
    max-width: 50%;
    height: auto;
    display: block;
    margin: 0 auto;
}

img.img-large {
    max-width: 70%;
    height: auto;
    display: block;
    margin: 20px auto;
}