diff --git a/core/core-frontend/src/style/index.less b/core/core-frontend/src/style/index.less
index 7f9f8b3..fb8d4a1 100644
--- a/core/core-frontend/src/style/index.less
+++ b/core/core-frontend/src/style/index.less
@@ -750,4 +750,8 @@ strong {
 
 .el-table--striped .el-table__body tr.el-table__row--striped td.el-table__cell{
   background-color: rgba(37, 38, 38, 0) !important;
+}
+
+.el-main ._fc-m-drag {
+  background: #c3c0c0
 }
\ No newline at end of file