diff --git a/css/styles.css b/css/styles.css
index 1b66f45..1dcca7e 100644
--- a/css/styles.css
+++ b/css/styles.css
@@ -521,14 +521,14 @@ input[type=number] {
 
 .darkmode-toggle {
   opacity: 0.7;
-  transition: opacity 0.15;
+  transition: opacity 0.15s;
 }
 .darkmode-toggle:hover {
   opacity: 0.9;
 }
 
 .darkmode-toggle:active {
-  transition: opacity 0;
+  transition: opacity 0s;
   opacity: 1;
 }