diff --git a/css/core.css b/css/core.css
index 3b14e7c..d9a7fe3 100644
--- a/css/core.css
+++ b/css/core.css
@@ -13,7 +13,7 @@ body, .normalFont {
 
 .main-container {
     height: 100%;
-    height: calc(100% - 42px);
+    height: calc(100% - 42px - 3px);
 }