diff --git a/assets/vendor/css/core.css b/assets/vendor/css/core.css
index edff46c..19e4a63 100644
--- a/assets/vendor/css/core.css
+++ b/assets/vendor/css/core.css
@@ -2521,7 +2521,7 @@ textarea.form-control-lg {
 .btn-check[disabled] + .btn, .btn-check:disabled + .btn {
   pointer-events: none;
   filter: none;
-  opacity: 0.65;
+  opacity: 0.40;
 }
 
 .form-range {