diff --git a/public/css/icinga/layout-structure.less b/public/css/icinga/layout-structure.less
index 127af2bd5..474071e59 100644
--- a/public/css/icinga/layout-structure.less
+++ b/public/css/icinga/layout-structure.less
@@ -42,11 +42,6 @@ body {
   #header, #sidebar {
     display: none;
   }
-
-  #main {
-    left: 0;
-    top: 0;
-  }
 }
 
 #fileupload-frame-target {
@@ -107,11 +102,6 @@ body {
   .controls > ul.tabs > li > a {
     line-height: 1.5em;
   }
-
-  #main {
-    left: 0;
-    top: 0 !important;
-  }
 }
 
 .controls-separated,
diff --git a/public/css/icinga/layout.less b/public/css/icinga/layout.less
index 8c8fdfb83..d419338e9 100644
--- a/public/css/icinga/layout.less
+++ b/public/css/icinga/layout.less
@@ -244,10 +244,6 @@ html.no-js .controls > .tabs {
     background-image: url('../img/icinga-logo-compact.svg');
   }
 
-  #main {
-    left: 3em;
-  }
-
   #sidebar {
     width: 4em;
   }
diff --git a/public/css/icinga/menu.less b/public/css/icinga/menu.less
index e3bb53e8d..01c46e07d 100644
--- a/public/css/icinga/menu.less
+++ b/public/css/icinga/menu.less
@@ -360,9 +360,6 @@ ul:not(.nav-level-2) > .selected > a {
 }
 
 #sidebar.expanded {
-  bottom: 0 !important;
-  height: auto !important;
-
   #mobile-menu-toggle .icon-menu {
     display: none;
   }