.stacks_left {
	float:left;
}

.stacks_row {
	overflow:hidden;
	margin:0 auto;
}
#stacks_in_4 .stacks_left {
	width:407px;
}

#stacks_in_4 .stacks_row {
	width:814px;
}
#stacks_in_4 {
	margin:  10px;
	padding:  10px;
}