diff --git a/src/assets/css/bundle/gallery.css b/src/assets/css/bundle/gallery.css
index 20d7a01..3f6a25d 100644
--- a/src/assets/css/bundle/gallery.css
+++ b/src/assets/css/bundle/gallery.css
@@ -20,6 +20,11 @@ is-land:not(:defined) .gallery dialog + button {
 }
 
 .gallery dialog img {
+  aspect-ratio: auto;
   max-block-size: 70vh;
   inline-size: auto;
 }
+
+.gallery dialog figcaption {
+  color: currentColor;
+}
diff --git a/src/assets/css/global/blocks/prose.css b/src/assets/css/global/blocks/prose.css
index 8cb0df5..0fcb702 100644
--- a/src/assets/css/global/blocks/prose.css
+++ b/src/assets/css/global/blocks/prose.css
@@ -17,11 +17,6 @@
   border-bottom: 1px solid var(--color-bg-accent);
 }
 
-/* light text colour for captions shown against the dark gallery backdrop */
-.prose .gallery dialog.flow figcaption {
-  color: var(--color-base-light);
-}
-
 :where(.prose :is(h2, h3, h4)) {
   --flow-space: var(--space-xl);
 }