diff --git a/css/area_main-sidebar-tabs.less b/css/area_main-sidebar-tabs.less
index e980e1d..0dc889d 100644
--- a/css/area_main-sidebar-tabs.less
+++ b/css/area_main-sidebar-tabs.less
@@ -4,11 +4,14 @@
 
     border-bottom: 1px solid @ini_nav_menu_color;
 
+    white-space: nowrap;
+
     li {
         display: inline-block;
         border: 1px solid @ini_nav_menu_color;
         padding: 0.25em 0.5em;
         margin-bottom: -1px;
+        margin-left: 0.5em;
         border-top-right-radius: @fix_border-radius;
         border-top-left-radius: @fix_border-radius;