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

body {
    font-family: 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    background-color: #fff;
    color: #333;
}

header {
    height: 100vh;
    background-size: cover;
    background-position: center;
    position: relative;
}

.overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.7);
}

nav {
    background: #444;
    color: white;
    padding: 1em;
    text-align: right;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: flex-end;
}

nav li {
    margin-left: 1.5em;
}

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

section {
    padding: 4em 2em;
    max-width: 800px;
    margin: auto;
}

footer {
    text-align: center;
    padding: 2em;
    background: #eee;
}