To remedy recent alignment issues with the add-to-cart and dynamic checkout buttons (Buy it now), consider adding this code to your theme files. This CSS repairs the misalignment with product page payment buttons.
Temporary fix for payment button alignment issue
- Open Themes in your Online Store
- Select Actions beside your theme
- Select Edit code
- Open the Assets folder, then styles.css
- Scroll to the very bottom of the file to paste this code:
/* patch for payment button alignment */
.shopify-payment-button div { height: auto; }
/* end */