*{
	box-sizing: border-box;
}
body{
	margin: 0;
}
header{
	background-color: #80e0ff;
	text-align: center;
	padding: 25px;
}
.navbar{
	background-color: #5498ae;
	height: 50px;
}
section{
	width: 33%;
	float: left;
	padding: 10px;
}
footer{
	display: block;
	clear: both;
	background-color: #80e0ff;
	text-align: center;
	padding: 25px;
}
@media screen and (max-width:600px){
	section{
		width: 100%;
	}
}