diff --git a/source/css/tufte_ext.css b/source/css/tufte_ext.css
index 75d17b6..4f4f8e5 100644
--- a/source/css/tufte_ext.css
+++ b/source/css/tufte_ext.css
@@ -17,4 +17,8 @@ p > code { font-size: 1.1rem; }
 
 article {
     counter-reset: sidenote-counter;
+}
+
+.sidenote, .marginnote {
+    font-size: 1.2rem;
 }
\ No newline at end of file