Put Sale Price on line below Original Price

I want to make it so the sale price and original price are on separate lines. Original price on top, sales price on bottom. How can I do this? Any help much appreciated. Thanks.

@rocketbase can you share a link to your page where you have the sale price live?

Here are the links. Ideally want the sale price and original price to be on two lines on both the product list page and the product pages themselves. Original price (price per month) on top, sales price (reservation fee) on bottom. 

https://westgate-one.squarespace.com/rent-studios

https://westgate-one.squarespace.com/rent-studios/p/classic-apartment-test-c384l-lk4ke

As you can see I've already used the Store Price Change code by @creedon to modify the pricing already.

Thanks in advance.

Perfect. Thanks @Beyondspace That works great.

I  simplified to the below so it worked across the product list page as well.

<style>
  .original-price {
  display: block;
}
</style>

1 hour ago, rocketbase said:

Perfect. Thanks @Beyondspace That works great.

I  simplified to the below so it worked across the product list page as well.

<style>
  .original-price {
  display: block;
}
</style>

You rock!