body {
    background-color: #121212;
    color: #f5f5f5;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header {
    background-color: #212121;
    padding: 20px;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav .logo {
    font-size: 24px;
    color: #e91e63;
}

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

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: #f5f5f5;
    text-decoration: none;
    font-size: 16px;
}

main {
    width: 70%;
    margin: 0 auto;
    padding: 20px;
}

section {
    margin-bottom: 40px;
}

footer {
    background-color: #212121;
    text-align: center;
    padding: 10px 0;
    position: fixed;
    width: 100%;
    bottom: 0;
}

@media (max-width: 768px) {
    main {
        width: 90%;
    }

    nav ul {
        flex-direction: column;
        align-items: flex-start;
    }

    nav ul li {
        margin: 10px 0;
    }
}