body {
    margin: 0;
    font-family: 'Arial', sans-serif;
    color: #2D2D2D;
    background-color: #F4F4F4;
}

header {
    background-size: cover;
    background-position: center;
    height: 80vh;
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

header h1 {
    font-size: 2.5em;
    margin: 0;
    background: rgba(0, 0, 0, 0.6);
    padding: 0.5em 1em;
    border-radius: 5px;
}

nav {
    display: flex;
    justify-content: space-around;
    background-color: #00A4CC;
    color: white;
    padding: 1em;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

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

main {
    padding: 2em;
}

section {
    margin-bottom: 2em;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1em auto;
    border-radius: 5px;
}

footer {
    background-color: #2D2D2D;
    color: white;
    text-align: center;
    padding: 1em;
}

@media (max-width: 768px) {
    header {
        height: 60vh;
    }
    nav {
        flex-direction: column;
        align-items: center;
    }
}