diff --git a/assets/main.scss b/assets/main.scss
index 8835ec9f3..4a0e878b8 100644
--- a/assets/main.scss
+++ b/assets/main.scss
@@ -3,7 +3,9 @@
 ---
 
 @charset "utf-8";
-$base-font-family: "Liberation Sans", "Arimo", "Arial", sans-serif;
+$base-font-family: ui-sans-serif, "Liberation Sans", Arimo, Arial, sans-serif;
+$monospace-font-family: ui-monospace, "Liberation Mono", Cousine, "Courier New",
+  monospace;
 
 @import "{{ site.theme }}";
 
@@ -29,7 +31,6 @@ a {
 
 pre,
 code {
-  font-family: "Liberation Mono", "Cousine", "Courier New", monospace !important;
   font-size: 0.8em !important;
 }