nav {
	background-color: #333;
	color: #fff;
}

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

nav li {
	padding: 10px;
}

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

section.principal {
	text-align: center;
	margin: 50px;
}

section.principal img {
	max-width: 100%;
	height: auto;
	margin-bottom: 20px;
}

footer {
	background-color: #333;
	color: #fff;
	text-align: center;
	padding: 10px;
	position: relative;
	bottom: 0;
	width: 100%;
}

body {
	font-family: 'Arial', sans-serif;
	margin: 0;
	padding: 0;
	background-color: #f8f8f8;
	color: #333;
}

header {
	text-align: center;
	padding: 10px;
	background-color: #4CAF50;
	color: #fff;
}

nav ul {
	list-style: none;
	padding: 0;
	margin: 0;
	text-align: center;
	background-color: #333;
}

nav li {
	display: inline;
	margin-right: 10px;
}

nav a {
	text-decoration: none;
	color: #fff;
	padding: 8px 15px;
	border-radius: 5px;
	background-color: #555;
}

nav a:hover {
	background-color: #777;
}

.container {
	width: 80%;
	margin: 20px auto;
	text-align: center;
}

.item {
	margin-bottom: 40px;
}

img {
	border-radius: 10px;
}

h3 {
	color: #4CAF50;
}

p {
	line-height: 1.6;
}

hr {
	border: 0;
	height: 1px;
	background: #ddd;
	margin: 20px 0;
}

.price {
	color: #FF5722;
	font-size: 18px;
}

strike {
	color: #777;
}