#stacks_in_4 {
	margin: 40px 0px 0px 0px;
}

#stacks_in_470 {
	margin: 40px 0px 0px 0px;
}

#stacks_in_531 {
	margin: 80px 0px 0px 0px;
}

#stacks_in_521 {
	margin: 40px 0px 0px 0px;
}