diff --git a/static/css/custom.css b/static/css/custom.css
index 5a6809546..540692b70 100644
--- a/static/css/custom.css
+++ b/static/css/custom.css
@@ -27,8 +27,8 @@
 /* cf. https://thesynack.com/posts/markdown-captions */
 figcaption {
   font-style: italic;
+  font-size: small;
   padding: 0px;
-  line-height:4px;
   text-align: center;
 }