diff --git a/ci/basop-pages/create_report_pages.py b/ci/basop-pages/create_report_pages.py
index cf3a3a6472347271149589643cb7275ddf4ee7f3..2f01db7bdec36df2a5748b76b88035792254a091 100644
--- a/ci/basop-pages/create_report_pages.py
+++ b/ci/basop-pages/create_report_pages.py
@@ -18,7 +18,7 @@ SUBPAGE_TMPL_CSS = """
 .tbase .tleft{text-align:left;horizontal-align:bottom}
 .tbase .tincrease{text-align:left;background-color:#ff5500;border-color:inherit;font-weight:bold;}
 .tbase .treduce{text-align:left;background-color:#acff00;border-color:inherit;font-weight:bold;}
-
+thead {position:sticky;top:0;background-color:#ffffffd0}
 .arrowup {font-weight:bold;font-size:200%;}
 .arrowdown {font-weight:bold;font-size:200%;}
 </style>