diff --git a/src/vs/workbench/browser/media/style.css b/src/vs/workbench/browser/media/style.css
index 1491381e007b949a093220ee3693179e1eb2aa2f..e458c9af828e84fe578e16c04e821f483e35f7ca 100644
--- a/src/vs/workbench/browser/media/style.css
+++ b/src/vs/workbench/browser/media/style.css
@@ -57,8 +57,7 @@ body.web {
 }
 
 .monaco-workbench.border {
-	height: calc(100vh - 2px);
-	width: calc(100vw - 2px);
+	box-sizing: border-box;
 	border: 1px solid var(--window-border-color);
 }