diff --git a/webui2/src/components/code/file-viewer.module.css b/webui2/src/components/code/file-viewer.module.css
index b3d5ce0372a6b8fa696c6dcaa60113144aba5f5d..4ab9e8eaf05308eb76116cedbc42ab0068a22a63 100644
--- a/webui2/src/components/code/file-viewer.module.css
+++ b/webui2/src/components/code/file-viewer.module.css
@@ -37,6 +37,7 @@
   opacity: 0.4;
   user-select: none;
   cursor: pointer;
+  background: transparent !important;
 }
 
 .line-number:hover {