#stacks_out_13 {
	width: 400px;
}

.stacks_left {
	float:left;
}

.stacks_row {
	overflow:hidden;
	margin:0 auto;
}
#stacks_in_2 .stacks_left {
	width:200px;
}

#stacks_in_2 .stacks_row {
	width:400px;
}