body {
	margin: 0;
	padding: 0;
	font-family: Arial, sans-serif;
	font-size: 16px;
	line-height: 1.5;
	color: #002347;
}

header {
	background-color: #002347;
	color: #fff;
	padding: 10px;
}

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

nav li {
	margin: 0 10px;
}

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

nav a.active {
	font-weight: bold;
}

main {
	margin: 20px;
}

.banner {
	background-image: url("https://thumbs.dreamstime.com/b/legs-shoes-sneakers-girl-wearing-fitness-boots-sock-flat-teenager-casual-footwear-colored-stylish-socks-legs-shoes-255733402.jpg");
	background-size: cover;
	background-position: center;
	height: 200px;
	display: flex;
	align-items: center;
	justify-content: center;
}

.banner h1 {
	font-size: 48px;
	color: #fff;
	text-shadow: 1px 1px 1px #333;
}

.about-us {
	margin-top: 50px;
}

.about-us h2 {
	font-size: 24px;
	margin-bottom: 20px;
}

.about-us p {
	margin-bottom: 20px;
}

footer {
	background-color: #002347;
	color: #fff;
	padding: 10px;
	text-align:center;
}

footer p {
margin: 0;
}

@media only screen and (max-width: 600px) {
header {
padding: 10px 20px;
}nav ul {
	flex-direction: column;
}

nav li {
	margin: 10px 0;
}

.banner h1 {
	font-size: 36px;
}
}

@media only screen and (max-width: 400px) {
.banner h1 {
font-size: 24px;
}
}