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

body {
    font-family: Arial, sans-serif;
    background: #111;
    color: white;
    line-height: 1.6;
}

header, section, footer {
    padding: 4rem 2rem;
}

h1 {
    font-size: 3rem;
}

h2 {
    margin-bottom: 1rem;
}