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

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f4f4f4;
    color: #333;
}

.container {
    width: 90%;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background: #333;
    color: #fff;
    padding: 20px 0;
    text-align: center;
}

nav ul {
    list-style: none;
    padding: 10px 0;
    display: flex;
    justify-content: center;
    gap: 20px;
}

nav ul li {
    display: inline;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 1rem;
}

nav ul li a:hover {
    text-decoration: underline;
}

section {
    background: #fff;
    margin: 20px 0;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h2 {
    border-bottom: 2px solid #333;
    padding-bottom: 10px;
    margin-bottom: 15px;
    font-size: 1.5rem;
}

ul {
    list-style-type: square;
    padding-left: 20px;
}

footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 15px 0;
}

/* Responsividade */
@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    h2 {
        font-size: 1.3rem;
    }
}