diff --git a/skin/light/light.css b/skin/light/light.css
index 5612e74..6d5f434 100644
--- a/skin/light/light.css
+++ b/skin/light/light.css
@@ -96,6 +96,10 @@
   display: -moz-box;
 }
 
+#main-window[inFullscreen][inDOMFullscreen] #verticaltabs-splitter {
+  display: none;
+}
+
 #main-window[tabspinned="true"] #verticaltabs-box {
   width: var(--pinned-width);
   box-shadow: none;