html {
	position: relative;
	min-height: 100%;
}
body {
	background-color: #efefef;
	margin: 0 0 50px;
	font-family: roboto;
}
.container {
	margin-top: 50px;
}

#header {
	width: 100%;
	background-color: white;
	left: 0;
	right: 0;
	top: 0;
	height: 50px;
	position: absolute;
	text-align: center;
	border-bottom: 1px solid lightgrey;
}
#header span{
	position: absolute;
	left: 50%;
	top: 50%;
	-webkit-transform: translate(-50%, -50%);
	transform: translate(-50%, -50%);
}
#header a {
	margin-right: 10px;
	margin-left: 10px;
	color: black;
}
a:link{
	text-decoration: none;
}
a:visited {
	text-decoration: none;
}
a:hover {
	text-decoration: underline;
}