body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

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

nav {
    background-color: #ddd;
    padding: 10px;
    text-align: center;
}

nav a {
    color: #333;
    text-decoration: none;
    padding: 10px 20px;
    margin: 0 5px;
    border-radius: 5px;
}

nav a:hover {
    background-color: #ccc;
}

.content-section {
    padding: 20px;
    margin: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

h2, h3 {
    color: #333;
}

ul, ol {
    padding-left: 20px;
}

li {
    margin-bottom: 8px;
}

table {
    width: 80%;
    margin: 20px auto;
    border-collapse: collapse;
}

th, td {
    border: 1px solid #ccc;
    padding: 8px;
    text-align: center;
}

th {
    background-color: #eee;
}

.calculator {
    margin-top: 20px;
    padding: 15px;
    border: 1px solid #ccc;
    border-radius: 5px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
}

.calculator label {
    font-weight: bold;
}

.calculator input[type="number"],
.calculator select,
.calculator button {
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    width: 100%;
    box-sizing: border-box;
}

.calculator button {
    background-color: #5cb85c;
    color: #fff;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.calculator button:hover {
    background-color: #4cae4c;
}

#result {
    margin-top: 15px;
    font-weight: bold;
}

footer {
    background-color: #f1f1f1; /* Cor de fundo opcional */
    text-align: center;
    padding: 10px;
    position: relative;
    bottom: 0;
    width: 100%;
}