diff --git a/org.css b/org.css
index a8c200f..fe2db16 100644
--- a/org.css
+++ b/org.css
@@ -8,7 +8,7 @@ a:hover {
 
 body {
     border: 0;
-    font-family: "PT Sans", sans-serif;
+    font-family: "PT Sans", "Liberation Sans", "DejaVu Sans", "Tahoma", "Verdana", "Arial", sans-serif;
     margin: 0;
     padding: 0;
     line-height: 160%;
@@ -41,7 +41,7 @@ h6 {
 
 pre {
     line-height: 100%;
-    font-family: "PT Mono", monospace;
+    font-family: "PT Mono", "Liberation Mono", "DejaVu Sans Mono", "Courier new", monospace;
     margin: 1.2em -8pt;
 }