fix: account for header and description having or not having nested elements

Author: pauloiankoski

src/DonationForms/resources/styles/components/_receipt.scss

@@ -302,7 +302,7 @@
       }
     }
 
-    &-heading * {
+    &-heading, &-heading * {
         position: relative;
         margin-block-end: 1rem;
         font-size: 1.75rem;
@@ -325,7 +325,11 @@
         }
     }
 
-    &-description * {
+    &-heading:has(*) {
+        margin-block-end: 0;
+    }
+
+    &-description, &-description * {
         font-size:1.125rem;
         line-height: 1.45;
         margin: 0 auto;