themes/bthree/src/styles/_base.sass

@@ -1,8 +1,8 @@
 \:root
-  --fs-xl: 3.6rem
+  --fs-xl: 6.4rem
 
   +media-sm
-    --fs-xl: 3.2rem
+    --fs-xl: 5.6rem
 
 $page-card-icon-size: 7.8rem
 .page-card
@@ -424,3 +424,18 @@ body.is-lightbox-active
 /* Web Assets Overrides. TODO: move to separate partial */
 .cards-item-title
   font-size: var(--fs-h4)
+
+details
+  border-radius: var(--border-radius-lg)
+
+  p,
+  ul
+    +padding(5, x)
+
+summary
+  +padding(3)
+  +padding(5, left)
+
+  &:before
+    left: var(--spacer)
+    top: var(--spacer)

themes/bthree/src/styles/_features.sass

@@ -167,7 +167,7 @@
     .cards-item-content
       .cards-item-title
         font:
-          size: var(--fs-5)
+          size: var(--fs-h2)
           weight: normal
 
 .cards-item-label