diff --git a/modules/__init__.py b/modules/__init__.py
index 3427ee8..8639f06 100644
--- a/modules/__init__.py
+++ b/modules/__init__.py
@@ -32,6 +32,10 @@ class Config:
 {{ id }} .bound {
     font-size: 0.9em;
 }
+{{ id }} .gauge-background {
+    fill: white;
+    stroke: black;
+}
 {{ id }} .gauge path {
     fill-opacity: 1 !important;
 }