#stacks_in_4_page20 {
	margin: 0px 0px 20px 0px;
}

#stacks_in_6_page20 {
	margin: 0px 0px 20px 0px;
}

#stacks_in_8_page20 {
	margin: 0px 0px 20px 0px;
}
#stacks_in_12_page20_float {
	float:left;
	width:50%;
}
#stacks_in_12_page20 {
	margin: 0px 0px 20px 0px;
}

#stacks_in_15_page20 {
	margin: 0px 20px 10px 0px;
}

#stacks_in_17_page20 {
	margin: 0px 20px 20px 0px;
}

#stacks_in_10_page20 {
	margin: 0px 0px 20px 0px;
}