diff --git a/packages/editor/src/App.css b/packages/editor/src/App.css
index b9d355d..7080033 100644
--- a/packages/editor/src/App.css
+++ b/packages/editor/src/App.css
@@ -1,8 +1,10 @@
 #root {
-  max-width: 1280px;
-  margin: 0 auto;
-  padding: 2rem;
-  text-align: center;
+  width: 100vw;
+  height: 100vh;
+  max-width: none;
+  margin: 0;
+  padding: 0;
+  text-align: initial;
 }
 
 .logo {
diff --git a/packages/editor/src/index.css b/packages/editor/src/index.css
index 08a3ac9..b5f71ce 100644
--- a/packages/editor/src/index.css
+++ b/packages/editor/src/index.css
@@ -24,12 +24,16 @@ a:hover {
 
 body {
   margin: 0;
-  display: flex;
-  place-items: center;
   min-width: 320px;
   min-height: 100vh;
 }
 
+/* Editor app should occupy the full viewport; Vite template centering breaks layout */
+#root {
+  width: 100vw;
+  height: 100vh;
+}
+
 h1 {
   font-size: 3.2em;
   line-height: 1.1;