diff --git a/css-system-font-stack.md b/css-system-font-stack.md
index 25716872a..cb26b3dd5 100644
--- a/css-system-font-stack.md
+++ b/css-system-font-stack.md
@@ -3,7 +3,12 @@ title: "CSS: System font stack"
 category: CSS
 ---
 
-> font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
+```css
+font-family: -apple-system, BlinkMacSystemFont,
+    "Segoe UI", "Roboto", "Oxygen",
+    "Ubuntu", "Cantarell", "Fira Sans",
+    "Droid Sans", "Helvetica Neue", sans-serif;
+```
 
 | Font                 | OS                      |
 | ----                 | --                      |