diff --git a/web/src/main/resources/web/css/bloodshed-color.css b/web/src/main/resources/web/css/bloodshed-color.css
index b4535d2..4317c18 100644
--- a/web/src/main/resources/web/css/bloodshed-color.css
+++ b/web/src/main/resources/web/css/bloodshed-color.css
@@ -97,7 +97,7 @@ tr:hover a{
 
 .kanban .state_10 .box,
 .kanban .state_100 .box{
-    background: linear-gradient(rgba(0,0,0,0.8));
+    opacity: 0.5;
 }
 
 .kanban .state_40 .box{