.puzzle-piece{
  margin: 0;
  padding: 0;
}
body{
	font-family: moFont, arial, sans-serif;
	padding: 0px;
	text-align: left;
}
#switch:hover,
#zufall:hover,
#echt:hover,
#stop:hover,
#next:hover{
  cursor: pointer;
  opacity: 0.7;
}