#stacks_in_5 {
	width: 100%;
	max-width: 100%;
}

@media (max-width: 768px) {
	#stacks_in_5 {
		height: 300px;
	}
}
@media (min-width: 768px) and (max-width: 991px) {
	#stacks_in_5 {
		height: 400px;
	}
}
@media (min-width: 992px) and (max-width: 1199px) {
	#stacks_in_5 {
		height: 500px;
	}
}
@media (min-width: 1200px) {
	#stacks_in_5 {
		height: 600px;
	}
}