From 6d1822c4494018e4b7af010a052d0a3ca768d934 Mon Sep 17 00:00:00 2001
From: mektpoy <mektpoy@deepseek.com>
Date: Thu, 22 Oct 2026 17:25:22 +0800
Subject: [PATCH] fix(experimental): keep the sticky header flush with the
 scrollport

---
 .../client-ui-perf/src/client/perf.module.css             | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/packages/experimental/client-ui-perf/src/client/perf.module.css b/packages/experimental/client-ui-perf/src/client/perf.module.css
index 1846d95829..c603ee019f 100644
--- a/packages/experimental/client-ui-perf/src/client/perf.module.css
+++ b/packages/experimental/client-ui-perf/src/client/perf.module.css
@@ -19,7 +19,13 @@
   height: 100%;
   min-height: 0;
   overflow-y: auto;
-  padding: 12px 20px calc(var(--dsh-composer-height, 152px) + 16px);
+  /* No top padding: a sticky header sits at the scrollport top, and padding
+     here would leave a strip where rows scroll above it. */
+  padding: 0 20px calc(var(--dsh-composer-height, 152px) + 16px);
+}
+
+.scroll > :first-child {
+  margin-top: 12px;
 }
 
 .empty {