diff --git a/superset-frontend/temporary_superset_ui/superset-ui/plugins/legacy-preset-chart-big-number/src/BigNumber/BigNumber.tsx b/superset-frontend/temporary_superset_ui/superset-ui/plugins/legacy-preset-chart-big-number/src/BigNumber/BigNumber.tsx
index b474a843174d..2d3676f8d229 100644
--- a/superset-frontend/temporary_superset_ui/superset-ui/plugins/legacy-preset-chart-big-number/src/BigNumber/BigNumber.tsx
+++ b/superset-frontend/temporary_superset_ui/superset-ui/plugins/legacy-preset-chart-big-number/src/BigNumber/BigNumber.tsx
@@ -341,14 +341,15 @@ export default styled(BigNumberVis)`
     padding-bottom: 0;
   }
 
-  &.is-fallback-value{
-    .header-line, .subheader-line {
-    opacity: 0.5;
+  &.is-fallback-value {
+    .header-line,
+    .subheader-line {
+      opacity: 0.5;
+    }
   }
- 
+
   .superset-data-ui-tooltip {
     z-index: 1000;
     background: #000;
   }
-
 `;