/* Reset some default styles */
body, h1, h2, p, ul, li, a, form, label, input, textarea, button {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Basic styling */
body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f4f4f4;
    color: #333;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background: #333;
    color: #fff;
    padding: 10px 0;
}

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

header nav ul li {
    margin-right: 20px;
}

header nav ul li:last-child {
    margin-right: 0;
}

header nav ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}

main {
    flex: 1;
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

section {
    margin-bottom: 20px;
}

h1, h2 {
    margin-bottom: 10px;
}

p {
    margin-bottom: 20px;
}

form {
    display: flex;
    flex-direction: column;
}

form label {
    margin-bottom: 5px;
}

form input, form textarea, form button {
    margin-bottom: 10px;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

form button {
    background: #333;
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

form button:hover {
    background: #555;
}

footer {
    text-align: center;
    padding: 10px 0;
    background: #333;
    color: #fff;
    margin-top: auto;
}

/* Responsive design */
@media (max-width: 768px) {
    header nav ul {
        flex-wrap: wrap;
    }

    header nav ul li {
        margin-right: 10px;
    }

    main {
        margin: 10px;
        padding: 10px;
    }

    form input, form textarea, form button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    body {
        padding: 0 10px;
    }

    header nav ul {
        flex-direction: row;
        overflow-x: auto;
        white-space: nowrap;
    }

    header nav ul li {
        margin-right: 10px;
    }

    main {
        margin: 5px;
        padding: 5px;
    }
}