diff --git a/src/style.css b/src/style.css
line changes: +2/-1
index 423fd40..068b8a7
--- a/src/style.css
+++ b/src/style.css

@@ -81,9 +81,10 @@ button.active {
 }
 
 .viewport canvas#pixelEditor {
-	flex: 0 0 0;
 	margin: 4px;
 	border: 1px solid white;
+	width: calc(100vh - 10px);
+	height: calc(100vh - 10px);
 }
 
 .tools2 {