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

header {
    background: linear-gradient(135deg, #0000ff, #000000);
    padding: 1rem;
    text-align: center;
    color: white;

}

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

nav ul li {
    display: inline;
    margin: 0 1.5rem;
    font-weight: 400;
}

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

main {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}
section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background-color: white;
}
footer {
    background: #333;
    padding: 1.5rem;
    text-align: center;
    color: white;
    margin-top: 2rem;
}