diff --git a/assets/base.css b/assets/base.css
index 05e086a3403..a5f6aa7bb4d 100644
--- a/assets/base.css
+++ b/assets/base.css
@@ -1426,6 +1426,11 @@ button.shopify-payment-button__button--unbranded {
   position: absolute;
   height: 100%;
   display: flex;
+  align-items: center;
+}
+
+.button.loading > .loading-overlay__spinner .spinner {
+  width: fit-content;
 }
 
 .button.loading > .loading-overlay__spinner .path {