body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

.container {
    width: 80%;
    margin: 0 auto;
}

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

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

header h1 {
    margin: 0;
    padding: 0;
}

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

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

nav ul li a {
    color: #fff;
    text-decoration: none;
}

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

footer {
    text-align: center;
}

footer p {
    margin: 0;
	text-align: center;
}

.livro {
    border: 1px solid #ccc;
    border-radius: 5px;
    padding: 20px;
    margin-top: 20px;
}

.livro img {
    width: 200px;
    height: auto;
    border-radius: 5px;
    margin-bottom: 10px;
}

.detalhes p {
    margin: 5px 0;
}

.comprar-btn {
    background-color: #4CAF50;
    color: white;
    text-align: center;
    padding: 10px 20px;
    border-radius: 5px;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.comprar-btn:hover {
    background-color: #45a049;
}