diff --git a/src/scss/typography.scss b/src/scss/typography.scss
index 3ba2633..13b594f 100644
--- a/src/scss/typography.scss
+++ b/src/scss/typography.scss
@@ -3,6 +3,7 @@
 @import "node_modules/bootstrap/scss/mixins";
 
 $font-size-base: 1rem;
+$font-size-display-base: null;
 $type-scales: (
   minor-second: 1.067,
   major-second: 1.125,