diff --git a/main.css b/main.css
index a2c6e4c..77baf37 100644
--- a/main.css
+++ b/main.css
@@ -30,7 +30,7 @@ body {
 
 .header:after {
     background: linear-gradient(-45deg, #fff 16px, transparent 0), linear-gradient(45deg, #fff 16px, transparent 0);
-    background-position: left-bottom;
+    background-position: left bottom;
     background-repeat: repeat-x;
     background-size: 32px 32px;
     content: " ";