diff --git a/content/addon_manage_buttons_without_popup.css b/content/addon_manage_buttons_without_popup.css
new file mode 100644
index 0000000..207a489
--- /dev/null
+++ b/content/addon_manage_buttons_without_popup.css
@@ -0,0 +1,43 @@
+/* Show addon management buttons without opening popup */
+
+@-moz-document url-prefix("chrome://mozapps/content/extensions/aboutaddons.html"){
+ 
+  .addon-card-message{ margin-bottom: 0px !important; margin-top: 0px !important; }
+  .card.addon{ padding-bottom: 0px !important; }
+  
+  addon-card .addon-card-collapsed{ display: grid !important; grid-template-areas: "ic con" "op op" }
+  
+  .more-options-menu{ position: static !important; grid-area: op; margin: 0 !important; }
+  .card-contents{ grid-area: con }
+  .card-heading-icon{ grid-area: ic }
+  
+  addon-options > panel-list{
+    position: static !important;
+    display: block !important;
+    padding: 0 !important;
+    margin: 0px calc(0px - var(--card-padding)) !important;
+  }
+  
+  .arrow,
+  .more-options-button,
+  panel-item[action="expand"]{ display: none }
+
+  div.list{ display: flex !important; flex-direction: row !important; } 
+
+  
+  panel-item[action="toggle-disabled"]{ --icon: url("chrome://browser/skin/quit.svg") }
+  panel-item[action="preferences"]{ --icon: url("chrome://browser/skin/settings.svg") }
+  
+/* Uncomment these if you want to hide button label - such as with compact_addons_manager */
+/*
+ button > slot{ display: none !important; }
+ link+button{
+    padding: 4px !important;
+    position: static !important;
+    width: 30px !important;
+    height: 30px !important;
+    background-position: 50% !important;
+  }
+  link+button::after{ display: none !important; }
+*/
+}
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diff --git a/content/compact_addons_manager.css b/content/compact_addons_manager.css
new file mode 100644
index 0000000..cb8b1f2
--- /dev/null
+++ b/content/compact_addons_manager.css
@@ -0,0 +1,57 @@
+/* Make the installed addons list more compact, title + only */
+/* Installed extensions list will be 3-6 columns wide, themes will be 2 columns wide. No effect on recommendations but those can be styled by adding two_column_html_addons.css */
+/* Compatible with addon_manage_buttons_without_popup.css */
+
+
+@-moz-document url-prefix("chrome://mozapps/content/extensions/aboutaddons.html"){
+  
+  :root{  overflow-x: hidden } /* Remove this if it causes horizontal scrolling problems */
+  
+  @media (min-width:420px){
+    #main{ max-width: unset !important; padding-right: 28px; }
+    addon-list > section{
+      padding: 1em;
+      display: grid;
+      grid-template-areas: "hd hd" "cd cd";
+      grid-auto-columns: 1fr;
+      column-gap: 1em;
+    }
+  
+    addon-card .card-contents{ width: unset !important; white-space: initial !important; }
+  
+    .card-heading-image{ max-width: calc(100% + 32px) }
+    section > h2{ grid-area: hd }
+    addon-card{
+      padding-bottom: 0px !important;
+      padding-top: 0px !important;
+      grid-area: auto;
+    }
+    addon-card .addon-description{ max-height: 3em; scrollbar-width: thin; }
+  }
+    
+  @media (min-width:640px){
+    addon-list[type="extension"] > section{ grid-template-areas: "hd hd hd" "cd cd cd"; }
+  }
+  @media (min-width:960px){
+    addon-list[type="extension"] > section{ grid-template-areas: "hd hd hd hd" "cd cd cd cd"; }
+  }
+  @media (min-width:1180px){
+    addon-list[type="extension"] > section{ grid-template-areas: "hd hd hd hd hd" "cd cd cd cd cd"; }
+  }
+  @media (min-width:1420px){
+    addon-list[type="extension"] > section{ grid-template-areas: "hd hd hd hd hd hd" "cd cd cd cd cd cd"; }
+  }
+  
+  addon-card:not([expanded]) .addon-description,
+  addon-card:not([expanded]) .addon-card-message button[action]{ display: none !important; }
+  
+  addon-list[type="extension"]{ --card-padding: 8px }
+ 
+}
+
+@-moz-document url-prefix("about:addons"){
+  #categories{ width: 60px !important; }
+  #categories > richlistitem{ margin-left: 20px !important; -moz-box-pack: center }
+  .sidebar-footer-label,
+  #category-box richlistitem > label{ display: none }
+}
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