diff --git a/chrome/tabs_below_content.css b/chrome/tabs_below_content.css
index 30295a8..3ab8078 100644
--- a/chrome/tabs_below_content.css
+++ b/chrome/tabs_below_content.css
@@ -36,8 +36,16 @@ linux_gtk_window_control_patch.css
   #titlebar{ -moz-appearance: none !important; }
 }
 /* Move tabs below content */
-:root:not([inDOMFullscreen]) #browser-bottombox{ margin-bottom: calc(var(--tab-min-height) + 2 * var(--tab-block-margin,0px)) }
-:root[inFullscreen]:not([inDOMFullscreen]) #browser-bottombox{ margin-bottom: 1px; }
+#main-window > body::after{
+  content: "";
+  display: -moz-box;
+}
+#main-window:not([inFullscreen]) > body::after{
+  margin-bottom: calc(var(--tab-min-height) + 2 * var(--tab-block-margin,0px));
+}
+#main-window[inFullscreen]:not([inDOMFullscreen]) > body::after{
+  margin-bottom: 1px;
+}
 
 #TabsToolbar{
   position: fixed;
diff --git a/chrome/vertical_bookmarks_toolbar.css b/chrome/vertical_bookmarks_toolbar.css
index 9eae7fa..f1ccdf0 100644
--- a/chrome/vertical_bookmarks_toolbar.css
+++ b/chrome/vertical_bookmarks_toolbar.css
@@ -55,11 +55,13 @@ See the above repository for updates as well as full license text. */
   
   #browser,
   #browser-bottombox,
+  #main-window > body::after, /* This selector is for compatibility with tabs_below_content.css */
   #customization-container{
     margin-left: var(--uc-vertical-toolbar-width,0);
   }
   :root:is([chromehidden~="toolbar"],[sizemode="fullscreen"]) > body > #browser,
   :root:is([chromehidden~="toolbar"],[sizemode="fullscreen"]) > body > #browser-bottombox,
+  #main-window:is([chromehidden~="toolbar"],[sizemode="fullscreen"]) > body::after,
   :root:is([chromehidden~="toolbar"],[sizemode="fullscreen"]) > body > #customization-container{
     margin-left: 0;
   }
diff --git a/content/standalone_image_page_mods.css b/content/standalone_image_page_mods.css
index 73999b4..c482fe9 100644
--- a/content/standalone_image_page_mods.css
+++ b/content/standalone_image_page_mods.css
@@ -3,7 +3,6 @@ See the above repository for updates as well as full license text. */
 
 @-moz-document media-document(image){
   @media not print {
-    
     :root{
       background-color: #232325 !important; /* set solid color background */
       background-image: none !important; /* remove default background */