diff --git a/packages/inspector/style/base.css b/packages/inspector/style/base.css
index dae089b31ebc..23845d44dc48 100644
--- a/packages/inspector/style/base.css
+++ b/packages/inspector/style/base.css
@@ -24,6 +24,7 @@
 
 .jp-Inspector-content {
   background: var(--jp-layout-color1);
+  display: flex;
   border: none;
 }