diff --git a/src/theme/components/format-text.scss b/src/theme/components/format-text.scss
index b0543d50b..a46570e14 100644
--- a/src/theme/components/format-text.scss
+++ b/src/theme/components/format-text.scss
@@ -284,7 +284,7 @@ core-format-text {
 
 }
 
-core-format-text,
+core-format-text .core-format-text-content,
 core-rich-text-editor .core-rte-editor {
     @include core-headings();
 
diff --git a/src/theme/globals.mixins.scss b/src/theme/globals.mixins.scss
index 13c691f3e..52031a533 100644
--- a/src/theme/globals.mixins.scss
+++ b/src/theme/globals.mixins.scss
@@ -148,22 +148,22 @@
 
 @mixin core-headings() {
     h1 {
-        font-size: 3rem;
+        font-size: 26px;
     }
     h2, .item-heading {
-        font-size: 2.8rem;
+        font-size: 24px;
     }
     h3 {
-        font-size: 2.6rem;
+        font-size: 22px;
     }
     h4 {
-        font-size: 2.2rem;
+        font-size: 20px;
     }
     h5 {
-        font-size: 1.8rem;
+        font-size: 18px;
     }
     h6 {
-        font-size: 1.4rem;
+        font-size: 16px;
     }
 }