diff --git a/css/stylus/knacss-unminified.css b/css/stylus/knacss-unminified.css
index 7e48b9d..dd64521 100644
--- a/css/stylus/knacss-unminified.css
+++ b/css/stylus/knacss-unminified.css
@@ -268,7 +268,7 @@ details,
 figure {
   margin-top: 0.75em;
   margin-bottom: 0;
-  line-height: line-height;
+  line-height: 1.5;
 }
 h1 .h1-like {
   font-size: 3.2rem;
diff --git a/styl/library/_base.styl b/styl/library/_base.styl
index ab3308d..5f2483f 100644
--- a/styl/library/_base.styl
+++ b/styl/library/_base.styl
@@ -63,7 +63,7 @@ details
 figure
   margin-top 0.75em
   margin-bottom 0
-  line-height line-height
+  line-height $line-height
 
 h1 .{$kna-namespace}h1-like
   font-size $h1-size