diff --git a/app/core/src/main/resources/static/pdfjs-legacy/css/viewer.css b/app/core/src/main/resources/static/pdfjs-legacy/css/viewer.css
index daec237cc..1cfa11425 100644
--- a/app/core/src/main/resources/static/pdfjs-legacy/css/viewer.css
+++ b/app/core/src/main/resources/static/pdfjs-legacy/css/viewer.css
@@ -3044,7 +3044,7 @@ body{
 
 #outerContainer{
   width:100%;
-  height: calc(100% - var(--navbar-height));
+  height: 100%;
   position:relative;
 
 }
diff --git a/app/core/src/main/resources/templates/fragments/common.html b/app/core/src/main/resources/templates/fragments/common.html
index 78f0d5662..f07347721 100644
--- a/app/core/src/main/resources/templates/fragments/common.html
+++ b/app/core/src/main/resources/templates/fragments/common.html
@@ -115,7 +115,7 @@
       
       // Set CSS custom property for mobile navbar scaling (for sidebar positioning)
       // Use the ACTUAL scaled height, not a fixed assumption
-      const baseHeight = 60;
+      const baseHeight = 64;
       const actualScaledHeight = baseHeight * navScale;
       document.documentElement.style.setProperty('--navbar-height', `${actualScaledHeight}px`);