diff --git a/setup/styles.css b/setup/styles.css
index 285d68e413..4edec3d513 100644
--- a/setup/styles.css
+++ b/setup/styles.css
@@ -251,6 +251,7 @@ ul.tabs li.active a {
 
 .tabs_contents {
     margin-top: 1em;
+    float: left;
 }
 
 .tabs_contents fieldset {