.change {
	background-image: url(../images/change.jpg);
	background-repeat: no-repeat;
	background-position: right bottom;
}
.graph {
	background-image: url(../images/graph.jpg);
	background-repeat: no-repeat;
	background-position: left bottom;
}
.statistics {
	background-image: url(../images/statistics.jpg);
	background-repeat: no-repeat;
	background-position: center top;
}
.happy {
	background-image: url(../images/happy.jpg);
	background-repeat: no-repeat;
	background-position: right bottom;
}