Gift Cards

Using the new checkout blocks here.

My shop allows both the usage of voucher codes as gift cards. Now, visually they are slightly different to one another as you can see here on the images

differences that could be aligned imho:
– use the same left padding/margin
– use the same mechanism to open up the code field (one is based on a link, the other one uses a collapse area with a down arrow)
– button placement (one has the button to the right, the other one below)