#stacks_out_2 {
	width: 90%;
}

#stacks_in_4 .stacks_left {
	float:left;
	width:49%;
}

#stacks_in_4 .stacks_right {
	float:right;
	width:49%;
}
#stacks_in_15 .stacks_left {
	float:left;
	width:49%;
}

#stacks_in_15 .stacks_right {
	float:right;
	width:49%;
}