* {
	margin: auto;
}

body {
	background-color: #eeeeee;
	overflow: hidden;
}

header {
	height: 50px;
	background-color: #999999;
	width: 100%;
}

.header-button {
	box-sizing: border-box;
	float: left;
	height: 50px;
	padding: 15px;
}

.header-button:hover {
	color: #dddddd;
	background-color: #bbbbbb;
}

.header-button:active {
	color: #eeeeee;
	background-color: #dddddd;
}

#page-container {
	width: 100%;
	box-sizing: border-box;
	min-height: 100%;
	background-color: #e9e9e9;
	padding: 50px;
}

#canvas {
	width: 400px;
	height: 400px;
	background-color: white;
	box-shadow: 5px 5px;
}

footer {
	
}