/* Base styling */
body {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

/* Header styles */
header {
    background: #456;
    color: #fff;
    padding: 2rem 0;
    text-align: center;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* Main content styles */
main {
    padding: 2rem;
}

/* Footer styles */
footer {
    background: #444;
    color: #fff;
    text-align: center;
    padding: 2rem 0;
    position: relative;
    width: 100%;
}

@media screen and (max-width: 768px) {
    nav {
        flex-direction: column;
        padding: 0;
    }

    nav a {
        margin: 0.5rem 0;
    }

    header,
    footer {
        padding: 1rem 0;
    }
}