diff --git a/services/web/frontend/stylesheets/app/editor/logs.less b/services/web/frontend/stylesheets/app/editor/logs.less
index 3b106c5975..3081da8d65 100644
--- a/services/web/frontend/stylesheets/app/editor/logs.less
+++ b/services/web/frontend/stylesheets/app/editor/logs.less
@@ -3,6 +3,7 @@
   top: @pdf-top-offset;
   overflow-y: auto;
   background-color: @logs-pane-bg;
+  z-index: 11; // above the PDF viewer + controls
 }
 
 .logs-pane-content {
diff --git a/services/web/frontend/stylesheets/app/editor/pdf.less b/services/web/frontend/stylesheets/app/editor/pdf.less
index ae731cbc6a..8eaf6efe08 100644
--- a/services/web/frontend/stylesheets/app/editor/pdf.less
+++ b/services/web/frontend/stylesheets/app/editor/pdf.less
@@ -213,7 +213,7 @@
     top: 0;
     left: 0;
     display: inline-block;
-    z-index: 2;
+    z-index: 10; // above the PDF viewer
     .btn-group {
       transition: opacity 0.5s ease, visibility 0 linear 0.5s;
       visibility: hidden;