diff --git a/src/material-examples/list-sections/list-sections-example.css b/src/material-examples/list-sections/list-sections-example.css
index 25346c92184..487bd8d4bc0 100644
--- a/src/material-examples/list-sections/list-sections-example.css
+++ b/src/material-examples/list-sections/list-sections-example.css
@@ -1,3 +1,3 @@
 .mat-list-icon {
-  color: rgba(0,0,0,0.54);
-}
\ No newline at end of file
+  color: rgba(0, 0, 0, 0.54);
+}