In some Shopify themes, the height of each product on a collection page may be different. Since the Add to cart buttons are displayed just below any collection product, sometimes the collection page may experience a lack of uniformity:
You can quickly fix this effect, simply do the following:
- Once on the Collections Add to Cart Button app, go to 'Advanced preferences'
- Enable the 'Align widgets vertically' option
- Then hit Save.
With the option enabled, the Add to Cart buttons should now be correctly aligned. For example, the previous collection page example would look as in the following image: