diff --git a/Lib/profiling/sampling/_heatmap_assets/heatmap.css b/Lib/profiling/sampling/_heatmap_assets/heatmap.css
index b6f086f11cae5e..5ea9a3e801dbd7 100644
--- a/Lib/profiling/sampling/_heatmap_assets/heatmap.css
+++ b/Lib/profiling/sampling/_heatmap_assets/heatmap.css
@@ -971,7 +971,6 @@
     outline-offset: -3px;
   }
   100% {
-    background: inherit;
     outline: 3px solid transparent;
     outline-offset: -3px;
   }