diff --git a/B03_FileInput/B03_FileInput_UI_Style.css b/B03_FileInput/B03_FileInput_UI_Style.css
index dd8bffd9b..30b99ce13 100644
--- a/B03_FileInput/B03_FileInput_UI_Style.css
+++ b/B03_FileInput/B03_FileInput_UI_Style.css
@@ -1,6 +1,5 @@
 .b03-file {
   min-height: calc(100dvh - var(--app-header-height, 0px));
-  background: linear-gradient(180deg, var(--color-canvas) 0%, var(--color-accent-soft) 100%);
   padding: 0 var(--spacing-24) var(--spacing-48) var(--spacing-24); /* 상단 여백은 main-layout 마진으로 조정하므로 padding-top은 0 */
 }
 
diff --git a/resources/tester/test_556_1_page_bg.py b/resources/tester/test_556_1_page_bg.py
index ef21f31ec..abd6818cf 100644
--- a/resources/tester/test_556_1_page_bg.py
+++ b/resources/tester/test_556_1_page_bg.py
@@ -22,3 +22,8 @@ def test_workflow_main_uses_page_bg():
 def test_general_layout_uses_page_bg():
     css = (ROOT / "ui_template/ui_template_general_layout.css").read_text(encoding="utf-8")
     assert "background: var(--color-bg)" in _rule(css, ".ui-general-layout")
+
+
+def test_b03_page_has_no_own_bg():
+    css = (ROOT / "B03_FileInput/B03_FileInput_UI_Style.css").read_text(encoding="utf-8")
+    assert "background" not in _rule(css, ".b03-file")