diff --git a/playground.css b/playground.css
index d0ec0ff4..133935b2 100644
--- a/playground.css
+++ b/playground.css
@@ -2,7 +2,9 @@
 html,
 body {
   height: 100%;
-  font-family: sans-serif;
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
+    Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", Arial,
+    sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
 }
 
 body {