* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f4f4f4;
    color: #333;
}

header {
    position: fixed;
    width: 100%;
    background-color: #333;
    color: #fff;
    top: 0;
    left: 0;
    z-index: 1000;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    padding: 10px 0;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    padding: 15px 0;
    display: block;
}

nav ul li a:hover {
    background-color: #555;
}

main {
    padding-top: 60px; /* height of the header */
    padding: 20px;
}

.hero {
    background: url('hero-image.jpg') no-repeat center center/cover;
    color: #fff;
    padding: 60px 20px;
    text-align: center;
}

.hero h1 {
    font-size: 2.5em;
}

.content {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
}

.content h2, .content h3 {
    margin-top: 20px;
}

.content ul {
    list-style-type: disc;
    margin: 20px 0;
    padding-left: 20px;
}

@media (max-width: 600px) {
    nav ul {
        flex-direction: column;
    }
    
    nav ul li {
        margin: 5px 0;
    }

    .hero {
        padding: 40px 20px;
    }

    .hero h1 {
        font-size: 2em;
    }
}