diff --git a/assets/stylesheets/template/base/_variables.scss b/assets/stylesheets/template/base/_variables.scss
index 2930f62..d5e379e 100644
--- a/assets/stylesheets/template/base/_variables.scss
+++ b/assets/stylesheets/template/base/_variables.scss
@@ -19,9 +19,6 @@ $theme-color-third: darken(#256b86, 8%);
 $theme-color-green: #0c81ae;
 $theme-color-hover: darken(#256b86, 8%);
 
-:root {
-  --theme-color-second: #{$theme-color-second};
-}
 // Font stacks
 $main-font: "Noto Sans TC", sans-serif;
 $sub-font: "Noto Sans TC", sans-serif;