diff --git a/assets/css/tabs.scss b/assets/css/tabs.scss
index b9469b8c793..34f1dda87af 100644
--- a/assets/css/tabs.scss
+++ b/assets/css/tabs.scss
@@ -50,8 +50,7 @@ table td, table th {
 }
 
 .grid-container > div {
-    /* White, with 80% opacity */
-    background-color: rgba(255, 255, 255, 0.8);
+    background-color: var(--pst-color-background);
     text-align: middle;
 }