diff --git a/src/components/Calendar.vue b/src/components/Calendar.vue
index 2e8dc0e..b9537b6 100644
--- a/src/components/Calendar.vue
+++ b/src/components/Calendar.vue
@@ -126,6 +126,7 @@
   height: 100%;
   border: solid 1px;
   border-radius: 5px;
+  user-select: none;
 }
 
 .item:hover