diff --git a/project/sass/apps/Announce/AppAnnounce/components/Add.vue b/project/sass/apps/Announce/AppAnnounce/components/Add.vue
index d2a189a6..74f1ed2b 100644
--- a/project/sass/apps/Announce/AppAnnounce/components/Add.vue
+++ b/project/sass/apps/Announce/AppAnnounce/components/Add.vue
@@ -661,7 +661,7 @@ export default {
 </script>
 
 <style lang="scss">
-.is-dark {
+.el-tooltip__popper.is-dark {
   width: 240px;
 }
 .AppAnnounceDetail-content-wrapper {