diff --git a/core/modules/system/css/system.module.css b/core/modules/system/css/system.module.css
index 71dd4c6..d60b517 100644
--- a/core/modules/system/css/system.module.css
+++ b/core/modules/system/css/system.module.css
@@ -195,7 +195,7 @@ table.sticky-header {
   margin-top: 5px;
   max-width: 100%;
   min-width: 100px;
-  height: 16px;
+  height: 1.5em;
   background-color: #fff;
 }
 .progress__bar {