#stacks_in_3 {
	padding:  20px;
}
#stacks_in_6_float {
	float:left;
	width:33%;
}
#stacks_in_6 {
	padding:  20px;
}
#stacks_in_11_float {
	float:left;
	width:33%;
}
#stacks_in_11 {
	padding:  20px;
}
#stacks_in_16_float {
	float:left;
	width:33%;
}
#stacks_in_16 {
	padding:  20px;
}
#stacks_in_21_float {
	float:left;
	width:33%;
}
#stacks_in_21 {
	padding:  20px;
}