diff --git a/packages/designer/src/project/project.less b/packages/designer/src/project/project.less
index 1959f7ade..8d664a6c9 100644
--- a/packages/designer/src/project/project.less
+++ b/packages/designer/src/project/project.less
@@ -23,5 +23,5 @@
   display: flex;
   justify-content: center;
   align-items: center;
-  height: 90vh;
+  height: 100vh;
 }