* {
	padding: 0;
	margin: 0;
}
body {
	padding: 0px;
}
header {
	background: #829eb9;
	height: 50px;
	font-family: Arial;
	text-align: center;
}
nav {
	background: #b3c6d9;
	height: 600px;
	width: 25%;
	float: left;
}
main {
	background: #e0e9f1;
	height: 600px;
	width: 75%;
	text-align: center;
	float: left;
	display: flex;
	align-items: center;
	justify-content: center;
}
footer {
	background: #829eb9;
	font-family: Arial;
	text-align: right;
	clear: both;
	height: 70px;
}
img {
	width: 450px;
	height: 450px;
}
#zasady {
	font-size: 18px;
}