diff --git a/client/assets/app.css b/client/assets/app.css
index f9999c7a..e870e766 100644
--- a/client/assets/app.css
+++ b/client/assets/app.css
@@ -22,6 +22,10 @@
 #bookshelf {
   height: calc(100% - 40px);
   background-image: linear-gradient(to right bottom, #2e2e2e, #303030, #313131, #333333, #353535, #343434, #323232, #313131, #2c2c2c, #282828, #232323, #1f1f1f);
+
+  /* For Firefox */
+  scrollbar-width: thin;
+  scrollbar-color: #855620 rgba(0, 0, 0, 0);
 }
 
 .bookshelf-row {