CSS

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

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background: #fff;
}

header img {
    height: 50px;
}

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

nav ul li {
    display: inline;
    margin-right: 20px;
}

section {
    padding: 20px;
    border-bottom: 1px solid #ccc;
}

#hero {
    background: #eee;
    text-align: center;
}

footer {
    text-align: center;
    padding: 20px;
    background: #f0f0f0;
}