diff --git a/css/module_filter_tab.css b/css/module_filter_tab.css
index 2607a61..337ab48 100644
--- a/css/module_filter_tab.css
+++ b/css/module_filter_tab.css
@@ -116,7 +116,7 @@ html.js #module-filter-show-wrapper {
   margin-bottom: 1em;
 }
 html.js #module-filter-modules {
-  margin-left: 240px;
+  margin-left: 16rem;
   border: 1px solid #ccc;
 }
 #module-filter-modules table {