body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #000000;
    background-color: #ffffff;
    margin: 0;
    padding: 0;
}

header {
    background-color: #4CAF50;
    color: #ffffff;
    padding: 1rem;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

nav h1 {
    margin: 0;
    font-size: 1.5rem;
}

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

nav ul li {
    margin-left: 1rem;
}

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

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

section {
    margin-bottom: 3rem;
}

h2 {
    color: #4CAF50;
}

#hero {
    text-align: center;
    background-color: #ffffff;
    padding: 2rem 1rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    border: 2px solid #4CAF50;
}

.cta-button {
    display: inline-block;
    background-color: #4CAF50;
    color: #ffffff;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    margin-top: 1rem;
    transition: background-color 0.3s ease;
}

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

#features ul, #how-to-use ol {
    padding-left: 20px;
}

#features li, #how-to-use li {
    margin-bottom: 1rem;
}

#examples .image-gallery {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

#examples .image-gallery img {
    width: 30%;
    margin-bottom: 1rem;
    border: 1px solid #4CAF50;
    border-radius: 4px;
}

#privacy-policy, #external-resources {
    background-color: #ffffff;
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid #4CAF50;
}

#external-resources ol {
    padding-left: 20px;
}

#external-resources li {
    margin-bottom: 0.5rem;
}

footer {
    text-align: center;
    padding: 1rem;
    background-color: #4CAF50;
    color: #ffffff;
    margin-top: 2rem;
}

@media (max-width: 768px) {
    nav {
        flex-direction: column;
        align-items: flex-start;
    }

    nav ul {
        margin-top: 1rem;
    }

    nav ul li {
        margin-left: 0;
        margin-right: 1rem;
    }

    #examples .image-gallery img {
        width: 100%;
    }
}