diff --git a/static/designer.css b/static/designer.css
index 3deb616..c14d6bc 100644
--- a/static/designer.css
+++ b/static/designer.css
@@ -66,30 +66,33 @@
   display: flex;
   flex-direction: column;
   align-items: center;
-  overflow: auto;
-  max-height: 800px;
+  overflow-y: auto;
+  overflow-x: hidden;
+  max-height: 1123px;
   padding: 20px;
   background: var(--bg);
   border: 1px solid var(--border);
   border-radius: var(--radius);
 }
 
-/* The actual A4 page */
+/* The actual A4 page - must be exactly 794x1123 */
 .a4-page {
-  width: 794px;
-  height: 1123px;
+  width: 794px !important;
+  height: 1123px !important;
   background: white;
   position: relative;
   box-shadow: 0 4px 20px rgba(0,0,0,0.3);
   overflow: hidden;
+  flex-shrink: 0;
 }
 
 /* Gridstack overrides for the A4 canvas */
 .a4-page .grid-stack {
   background: transparent;
-  width: 794px;
-  height: 1123px;
-  position: relative;
+  position: absolute !important;
+  top: 0;
+  left: 0;
+  width: 794px !important;
 }
 
 .a4-page .grid-stack-item {