diff --git a/gtk-3.20/gtk-dark.css b/gtk-3.20/gtk-dark.css
index c8f1920..e505813 100644
--- a/gtk-3.20/gtk-dark.css
+++ b/gtk-3.20/gtk-dark.css
@@ -279,7 +279,7 @@ check, .check {
     check:active:disabled, check:checked:disabled, .check:active:disabled, .check:checked:disabled {
       -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive.png"), url("assets/checkbox-checked-insensitive-@2.png")); }
       check:active:disabled:backdrop, check:checked:disabled:backdrop, .check:active:disabled:backdrop, .check:checked:disabled:backdrop {
-        -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-unfocused.png")); }
+        -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-unfocused.png"), url("assets/checkbox-checked-insensitive-unfocused-@2.png")); }
   check:indeterminate, .check:indeterminate {
     -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed.png"), url("assets/checkbox-mixed-@2.png")); }
     check:indeterminate:backdrop, .check:indeterminate:backdrop {
@@ -303,7 +303,7 @@ check row:selected check, .check row:selected check {
     check row:selected check:active:disabled, check row:selected check:checked:disabled, .check row:selected check:active:disabled, .check row:selected check:checked:disabled {
       -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-selected.png"), url("assets/checkbox-checked-insensitive-selected-@2.png")); }
       check row:selected check:active:disabled:backdrop, check row:selected check:checked:disabled:backdrop, .check row:selected check:active:disabled:backdrop, .check row:selected check:checked:disabled:backdrop {
-        -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-unfocused-selected.png")); }
+        -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-unfocused-selected.png"), url("assets/checkbox-checked-insensitive-unfocused-selected-@2.png")); }
   check row:selected check:indeterminate, .check row:selected check:indeterminate {
     -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed-selected.png"), url("assets/checkbox-mixed-selected-@2.png")); }
     check row:selected check:indeterminate:backdrop, .check row:selected check:indeterminate:backdrop {
@@ -380,7 +380,7 @@ menuitem check {
     menuitem check:active:disabled, menuitem check:checked:disabled {
       -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive.png"), url("assets/checkbox-checked-insensitive-@2.png")); }
       menuitem check:active:disabled:backdrop, menuitem check:checked:disabled:backdrop {
-        -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-unfocused.png")); }
+        -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-unfocused.png"), url("assets/checkbox-checked-insensitive-unfocused-@2.png")); }
   menuitem check:indeterminate {
     -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed.png"), url("assets/checkbox-mixed-@2.png")); }
     menuitem check:indeterminate:backdrop {
@@ -389,30 +389,6 @@ menuitem check {
       -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed-insensitive.png"), url("assets/checkbox-mixed-insensitive-@2.png")); }
       menuitem check:indeterminate:disabled:backdrop {
         -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed-insensitive-unfocused.png"), url("assets/checkbox-mixed-insensitive-unfocused-@2.png")); }
-menuitem check:hover {
-  -gtk-icon-source: -gtk-scaled(url("assets/checkbox-unchecked-selected.png"), url("assets/checkbox-unchecked-selected-@2.png")); }
-  menuitem check:hover:backdrop {
-    -gtk-icon-source: -gtk-scaled(url("assets/checkbox-unchecked-unfocused-selected.png"), url("assets/checkbox-unchecked-unfocused-selected-@2.png")); }
-  menuitem check:hover:disabled {
-    -gtk-icon-source: -gtk-scaled(url("assets/checkbox-unchecked-insensitive-selected.png"), url("assets/checkbox-unchecked-insensitive-selected-@2.png")); }
-    menuitem check:hover:disabled:backdrop {
-      -gtk-icon-source: -gtk-scaled(url("assets/checkbox-unchecked-insensitive-unfocused-selected.png"), url("assets/checkbox-unchecked-insensitive-unfocused-selected-@2.png")); }
-  menuitem check:hover:active, menuitem check:hover:checked {
-    -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-selected.png"), url("assets/checkbox-checked-selected-@2.png")); }
-    menuitem check:hover:active:backdrop, menuitem check:hover:checked:backdrop {
-      -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-unfocused-selected.png"), url("assets/checkbox-checked-unfocused-selected-@2.png")); }
-    menuitem check:hover:active:disabled, menuitem check:hover:checked:disabled {
-      -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-selected.png"), url("assets/checkbox-checked-insensitive-selected-@2.png")); }
-      menuitem check:hover:active:disabled:backdrop, menuitem check:hover:checked:disabled:backdrop {
-        -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-unfocused-selected.png")); }
-  menuitem check:hover:indeterminate {
-    -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed-selected.png"), url("assets/checkbox-mixed-selected-@2.png")); }
-    menuitem check:hover:indeterminate:backdrop {
-      -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed-unfocused-selected.png"), url("assets/checkbox-mixed-unfocused-selected-@2.png")); }
-    menuitem check:hover:indeterminate:disabled {
-      -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed-insensitive-selected.png"), url("assets/checkbox-mixed-insensitive-selected-@2.png")); }
-      menuitem check:hover:indeterminate:disabled:backdrop {
-        -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed-insensitive-unfocused-selected.png"), url("assets/checkbox-mixed-insensitive-unfocused-selected-@2.png")); }
 menuitem radio {
   -gtk-icon-source: -gtk-scaled(url("assets/radio-unchecked.png"), url("assets/radio-unchecked-@2.png")); }
   menuitem radio:backdrop {
@@ -437,30 +413,6 @@ menuitem radio {
       -gtk-icon-source: -gtk-scaled(url("assets/radio-mixed-insensitive.png"), url("assets/radio-mixed-insensitive-@2.png")); }
       menuitem radio:indeterminate:disabled:backdrop {
         -gtk-icon-source: -gtk-scaled(url("assets/radio-mixed-insensitive-unfocused.png"), url("assets/radio-mixed-insensitive-unfocused-@2.png")); }
-menuitem radio:hover {
-  -gtk-icon-source: -gtk-scaled(url("assets/radio-unchecked-selected.png"), url("assets/radio-unchecked-selected-@2.png")); }
-  menuitem radio:hover:backdrop {
-    -gtk-icon-source: -gtk-scaled(url("assets/radio-unchecked-unfocused-selected.png"), url("assets/radio-unchecked-unfocused-selected-@2.png")); }
-  menuitem radio:hover:disabled {
-    -gtk-icon-source: -gtk-scaled(url("assets/radio-unchecked-insensitive-selected.png"), url("assets/radio-unchecked-insensitive-selected-@2.png")); }
-    menuitem radio:hover:disabled:backdrop {
-      -gtk-icon-source: -gtk-scaled(url("assets/radio-unchecked-insensitive-unfocused-selected.png"), url("assets/radio-unchecked-insensitive-unfocused-selected-@2.png")); }
-  menuitem radio:hover:active, menuitem radio:hover:checked {
-    -gtk-icon-source: -gtk-scaled(url("assets/radio-checked-selected.png"), url("assets/radio-checked-selected-@2.png")); }
-    menuitem radio:hover:active:backdrop, menuitem radio:hover:checked:backdrop {
-      -gtk-icon-source: -gtk-scaled(url("assets/radio-checked-unfocused-selected.png"), url("assets/radio-checked-unfocused-selected-@2.png")); }
-    menuitem radio:hover:active:disabled, menuitem radio:hover:checked:disabled {
-      -gtk-icon-source: -gtk-scaled(url("assets/radio-checked-insensitive-selected.png"), url("assets/radio-checked-insensitive-selected-@2.png")); }
-      menuitem radio:hover:active:disabled:backdrop, menuitem radio:hover:checked:disabled:backdrop {
-        -gtk-icon-source: -gtk-scaled(url("assets/radio-checked-insensitive-unfocused-selected.png"), url("assets/radio-checked-insensitive-unfocused-selected-@2.png")); }
-  menuitem radio:hover:indeterminate {
-    -gtk-icon-source: -gtk-scaled(url("assets/radio-mixed-selected.png"), url("assets/radio-mixed-selected-@2.png")); }
-    menuitem radio:hover:indeterminate:backdrop {
-      -gtk-icon-source: -gtk-scaled(url("assets/radio-mixed-unfocused-selected.png"), url("assets/radio-mixed-unfocused-selected-@2.png")); }
-    menuitem radio:hover:indeterminate:disabled {
-      -gtk-icon-source: -gtk-scaled(url("assets/radio-mixed-insensitive-selected.png"), url("assets/radio-mixed-insensitive-selected-@2.png")); }
-      menuitem radio:hover:indeterminate:disabled:backdrop {
-        -gtk-icon-source: -gtk-scaled(url("assets/radio-mixed-insensitive-unfocused-selected.png"), url("assets/radio-mixed-insensitive-unfocused-selected-@2.png")); }
 
 .content-view.view {
   background-color: #1F1F1F; }
@@ -2507,32 +2459,32 @@ messagedialog {
     color: transparent;
     background-color: transparent;
     -gtk-icon-shadow: none;
-    background-position: center;
+    background-position: center center;
     background-repeat: no-repeat; }
   .titlebar .titlebutton.close {
-    background: url("assets/close-normal.svg") 100% 100%; }
+    background-image: url("assets/close-normal.svg"); }
     .titlebar .titlebutton.close:hover {
-      background: url("assets/close-hover.svg") 100% 100%; }
+      background-image: url("assets/close-hover.svg"); }
     .titlebar .titlebutton.close:active {
-      background: url("assets/close-active.svg") 100% 100%; }
+      background-image: url("assets/close-active.svg"); }
     .titlebar .titlebutton.close:backdrop {
-      background: url("assets/close-backdrop.svg") 100% 100%; }
+      background-image: url("assets/close-backdrop.svg"); }
   .titlebar .titlebutton.minimize {
-    background: url("assets/minimize-normal.svg") 100% 100%; }
+    background-image: url("assets/minimize-normal.svg"); }
     .titlebar .titlebutton.minimize:hover {
-      background: url("assets/minimize-hover.svg") 100% 100%; }
+      background-image: url("assets/minimize-hover.svg"); }
     .titlebar .titlebutton.minimize:active {
-      background: url("assets/minimize-active.svg") 100% 100%; }
+      background-image: url("assets/minimize-active.svg"); }
     .titlebar .titlebutton.minimize:backdrop {
-      background: url("assets/minimize-backdrop.svg") 100% 100%; }
+      background-image: url("assets/minimize-backdrop.svg"); }
   .titlebar .titlebutton.maximize {
-    background: url("assets/maximize-normal.svg") 100% 100%; }
+    background-image: url("assets/maximize-normal.svg"); }
     .titlebar .titlebutton.maximize:hover {
-      background: url("assets/maximize-hover.svg") 100% 100%; }
+      background-image: url("assets/maximize-hover.svg"); }
     .titlebar .titlebutton.maximize:active {
-      background: url("assets/maximize-active.svg") 100% 100%; }
+      background-image: url("assets/maximize-active.svg"); }
     .titlebar .titlebutton.maximize:backdrop {
-      background: url("assets/maximize-backdrop.svg") 100% 100%; }
+      background-image: url("assets/maximize-backdrop.svg"); }
   .tiled .titlebar:not(headerbar), .tiled .titlebar:backdrop:not(headerbar), .maximized .titlebar:not(headerbar), .maximized .titlebar:backdrop:not(headerbar) {
     border-radius: 0; }
 
diff --git a/gtk-3.20/gtk.css b/gtk-3.20/gtk.css
index 08ac686..614eac0 100644
--- a/gtk-3.20/gtk.css
+++ b/gtk-3.20/gtk.css
@@ -279,7 +279,7 @@ check, .check {
     check:active:disabled, check:checked:disabled, .check:active:disabled, .check:checked:disabled {
       -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive.png"), url("assets/checkbox-checked-insensitive-@2.png")); }
       check:active:disabled:backdrop, check:checked:disabled:backdrop, .check:active:disabled:backdrop, .check:checked:disabled:backdrop {
-        -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-unfocused.png")); }
+        -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-unfocused.png"), url("assets/checkbox-checked-insensitive-unfocused-@2.png")); }
   check:indeterminate, .check:indeterminate {
     -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed.png"), url("assets/checkbox-mixed-@2.png")); }
     check:indeterminate:backdrop, .check:indeterminate:backdrop {
@@ -303,7 +303,7 @@ check row:selected check, .check row:selected check {
     check row:selected check:active:disabled, check row:selected check:checked:disabled, .check row:selected check:active:disabled, .check row:selected check:checked:disabled {
       -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-selected.png"), url("assets/checkbox-checked-insensitive-selected-@2.png")); }
       check row:selected check:active:disabled:backdrop, check row:selected check:checked:disabled:backdrop, .check row:selected check:active:disabled:backdrop, .check row:selected check:checked:disabled:backdrop {
-        -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-unfocused-selected.png")); }
+        -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-unfocused-selected.png"), url("assets/checkbox-checked-insensitive-unfocused-selected-@2.png")); }
   check row:selected check:indeterminate, .check row:selected check:indeterminate {
     -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed-selected.png"), url("assets/checkbox-mixed-selected-@2.png")); }
     check row:selected check:indeterminate:backdrop, .check row:selected check:indeterminate:backdrop {
@@ -380,7 +380,7 @@ menuitem check {
     menuitem check:active:disabled, menuitem check:checked:disabled {
       -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive.png"), url("assets/checkbox-checked-insensitive-@2.png")); }
       menuitem check:active:disabled:backdrop, menuitem check:checked:disabled:backdrop {
-        -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-unfocused.png")); }
+        -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-unfocused.png"), url("assets/checkbox-checked-insensitive-unfocused-@2.png")); }
   menuitem check:indeterminate {
     -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed.png"), url("assets/checkbox-mixed-@2.png")); }
     menuitem check:indeterminate:backdrop {
@@ -389,30 +389,6 @@ menuitem check {
       -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed-insensitive.png"), url("assets/checkbox-mixed-insensitive-@2.png")); }
       menuitem check:indeterminate:disabled:backdrop {
         -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed-insensitive-unfocused.png"), url("assets/checkbox-mixed-insensitive-unfocused-@2.png")); }
-menuitem check:hover {
-  -gtk-icon-source: -gtk-scaled(url("assets/checkbox-unchecked-selected.png"), url("assets/checkbox-unchecked-selected-@2.png")); }
-  menuitem check:hover:backdrop {
-    -gtk-icon-source: -gtk-scaled(url("assets/checkbox-unchecked-unfocused-selected.png"), url("assets/checkbox-unchecked-unfocused-selected-@2.png")); }
-  menuitem check:hover:disabled {
-    -gtk-icon-source: -gtk-scaled(url("assets/checkbox-unchecked-insensitive-selected.png"), url("assets/checkbox-unchecked-insensitive-selected-@2.png")); }
-    menuitem check:hover:disabled:backdrop {
-      -gtk-icon-source: -gtk-scaled(url("assets/checkbox-unchecked-insensitive-unfocused-selected.png"), url("assets/checkbox-unchecked-insensitive-unfocused-selected-@2.png")); }
-  menuitem check:hover:active, menuitem check:hover:checked {
-    -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-selected.png"), url("assets/checkbox-checked-selected-@2.png")); }
-    menuitem check:hover:active:backdrop, menuitem check:hover:checked:backdrop {
-      -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-unfocused-selected.png"), url("assets/checkbox-checked-unfocused-selected-@2.png")); }
-    menuitem check:hover:active:disabled, menuitem check:hover:checked:disabled {
-      -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-selected.png"), url("assets/checkbox-checked-insensitive-selected-@2.png")); }
-      menuitem check:hover:active:disabled:backdrop, menuitem check:hover:checked:disabled:backdrop {
-        -gtk-icon-source: -gtk-scaled(url("assets/checkbox-checked-insensitive-unfocused-selected.png")); }
-  menuitem check:hover:indeterminate {
-    -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed-selected.png"), url("assets/checkbox-mixed-selected-@2.png")); }
-    menuitem check:hover:indeterminate:backdrop {
-      -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed-unfocused-selected.png"), url("assets/checkbox-mixed-unfocused-selected-@2.png")); }
-    menuitem check:hover:indeterminate:disabled {
-      -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed-insensitive-selected.png"), url("assets/checkbox-mixed-insensitive-selected-@2.png")); }
-      menuitem check:hover:indeterminate:disabled:backdrop {
-        -gtk-icon-source: -gtk-scaled(url("assets/checkbox-mixed-insensitive-unfocused-selected.png"), url("assets/checkbox-mixed-insensitive-unfocused-selected-@2.png")); }
 menuitem radio {
   -gtk-icon-source: -gtk-scaled(url("assets/radio-unchecked.png"), url("assets/radio-unchecked-@2.png")); }
   menuitem radio:backdrop {
@@ -437,30 +413,6 @@ menuitem radio {
       -gtk-icon-source: -gtk-scaled(url("assets/radio-mixed-insensitive.png"), url("assets/radio-mixed-insensitive-@2.png")); }
       menuitem radio:indeterminate:disabled:backdrop {
         -gtk-icon-source: -gtk-scaled(url("assets/radio-mixed-insensitive-unfocused.png"), url("assets/radio-mixed-insensitive-unfocused-@2.png")); }
-menuitem radio:hover {
-  -gtk-icon-source: -gtk-scaled(url("assets/radio-unchecked-selected.png"), url("assets/radio-unchecked-selected-@2.png")); }
-  menuitem radio:hover:backdrop {
-    -gtk-icon-source: -gtk-scaled(url("assets/radio-unchecked-unfocused-selected.png"), url("assets/radio-unchecked-unfocused-selected-@2.png")); }
-  menuitem radio:hover:disabled {
-    -gtk-icon-source: -gtk-scaled(url("assets/radio-unchecked-insensitive-selected.png"), url("assets/radio-unchecked-insensitive-selected-@2.png")); }
-    menuitem radio:hover:disabled:backdrop {
-      -gtk-icon-source: -gtk-scaled(url("assets/radio-unchecked-insensitive-unfocused-selected.png"), url("assets/radio-unchecked-insensitive-unfocused-selected-@2.png")); }
-  menuitem radio:hover:active, menuitem radio:hover:checked {
-    -gtk-icon-source: -gtk-scaled(url("assets/radio-checked-selected.png"), url("assets/radio-checked-selected-@2.png")); }
-    menuitem radio:hover:active:backdrop, menuitem radio:hover:checked:backdrop {
-      -gtk-icon-source: -gtk-scaled(url("assets/radio-checked-unfocused-selected.png"), url("assets/radio-checked-unfocused-selected-@2.png")); }
-    menuitem radio:hover:active:disabled, menuitem radio:hover:checked:disabled {
-      -gtk-icon-source: -gtk-scaled(url("assets/radio-checked-insensitive-selected.png"), url("assets/radio-checked-insensitive-selected-@2.png")); }
-      menuitem radio:hover:active:disabled:backdrop, menuitem radio:hover:checked:disabled:backdrop {
-        -gtk-icon-source: -gtk-scaled(url("assets/radio-checked-insensitive-unfocused-selected.png"), url("assets/radio-checked-insensitive-unfocused-selected-@2.png")); }
-  menuitem radio:hover:indeterminate {
-    -gtk-icon-source: -gtk-scaled(url("assets/radio-mixed-selected.png"), url("assets/radio-mixed-selected-@2.png")); }
-    menuitem radio:hover:indeterminate:backdrop {
-      -gtk-icon-source: -gtk-scaled(url("assets/radio-mixed-unfocused-selected.png"), url("assets/radio-mixed-unfocused-selected-@2.png")); }
-    menuitem radio:hover:indeterminate:disabled {
-      -gtk-icon-source: -gtk-scaled(url("assets/radio-mixed-insensitive-selected.png"), url("assets/radio-mixed-insensitive-selected-@2.png")); }
-      menuitem radio:hover:indeterminate:disabled:backdrop {
-        -gtk-icon-source: -gtk-scaled(url("assets/radio-mixed-insensitive-unfocused-selected.png"), url("assets/radio-mixed-insensitive-unfocused-selected-@2.png")); }
 
 .content-view.view {
   background-color: #FFFFFF; }
@@ -840,7 +792,7 @@ menu, .menu {
   border-radius: 4px;
   border-style: none;
   color: #000000;
-  background-color: #F5F5F5; }
+  background-color: #FFFFFF; }
   .csd menu, .csd .menu {
     padding: 4px 0px;
     border-radius: 4px;
@@ -848,16 +800,16 @@ menu, .menu {
   menu > arrow, .menu > arrow {
     padding: 4px;
     border-color: transparent;
-    background-color: #F5F5F5;
+    background-color: #FFFFFF;
     min-width: 16px;
     min-height: 16px; }
     menu > arrow.top, .menu > arrow.top {
       margin-top: -6px;
-      border-bottom: 1px solid shade(#F5F5F5, 0.9);
+      border-bottom: 1px solid shade(#FFFFFF, 0.9);
       -gtk-icon-source: -gtk-icontheme("pan-up-symbolic"); }
     menu > arrow.bottom, .menu > arrow.bottom {
       margin-bottom: -6px;
-      border-top: 1px solid shade(#F5F5F5, 0.9);
+      border-top: 1px solid shade(#FFFFFF, 0.9);
       -gtk-icon-source: -gtk-icontheme("pan-down-symbolic"); }
 
 menubar, .menubar {
@@ -892,12 +844,12 @@ menu menuitem, .menu menuitem {
   border: none;
   border-radius: 0;
   color: #000000;
-  background-color: #F5F5F5; }
+  background-color: #FFFFFF; }
   menu menuitem:hover, .menu menuitem:hover {
     color: #FFFFFF;
     background-color: #3478F5; }
   menu menuitem:disabled, .menu menuitem:disabled {
-    color: mix(#000000, #F5F5F5, 0.5); }
+    color: mix(#000000, #FFFFFF, 0.5); }
   menu menuitem arrow, .menu menuitem arrow {
     min-width: 16px;
     min-height: 16px; }
@@ -1431,7 +1383,7 @@ separator {
   menuitem separator {
     border-width: 1px;
     border-style: none;
-    color: mix(shade(#F5F5F5, 0.9), #F5F5F5, 0.5); }
+    color: mix(shade(#F5F5F5, 0.9), #FFFFFF, 0.5); }
   popover separator {
     border: 0;
     color: alpha(currentColor, 0.5);
@@ -2507,32 +2459,32 @@ messagedialog {
     color: transparent;
     background-color: transparent;
     -gtk-icon-shadow: none;
-    background-position: center;
+    background-position: center center;
     background-repeat: no-repeat; }
   .titlebar .titlebutton.close {
-    background: url("assets/close-normal.svg") 100% 100%; }
+    background-image: url("assets/close-normal.svg"); }
     .titlebar .titlebutton.close:hover {
-      background: url("assets/close-hover.svg") 100% 100%; }
+      background-image: url("assets/close-hover.svg"); }
     .titlebar .titlebutton.close:active {
-      background: url("assets/close-active.svg") 100% 100%; }
+      background-image: url("assets/close-active.svg"); }
     .titlebar .titlebutton.close:backdrop {
-      background: url("assets/close-backdrop.svg") 100% 100%; }
+      background-image: url("assets/close-backdrop.svg"); }
   .titlebar .titlebutton.minimize {
-    background: url("assets/minimize-normal.svg") 100% 100%; }
+    background-image: url("assets/minimize-normal.svg"); }
     .titlebar .titlebutton.minimize:hover {
-      background: url("assets/minimize-hover.svg") 100% 100%; }
+      background-image: url("assets/minimize-hover.svg"); }
     .titlebar .titlebutton.minimize:active {
-      background: url("assets/minimize-active.svg") 100% 100%; }
+      background-image: url("assets/minimize-active.svg"); }
     .titlebar .titlebutton.minimize:backdrop {
-      background: url("assets/minimize-backdrop.svg") 100% 100%; }
+      background-image: url("assets/minimize-backdrop.svg"); }
   .titlebar .titlebutton.maximize {
-    background: url("assets/maximize-normal.svg") 100% 100%; }
+    background-image: url("assets/maximize-normal.svg"); }
     .titlebar .titlebutton.maximize:hover {
-      background: url("assets/maximize-hover.svg") 100% 100%; }
+      background-image: url("assets/maximize-hover.svg"); }
     .titlebar .titlebutton.maximize:active {
-      background: url("assets/maximize-active.svg") 100% 100%; }
+      background-image: url("assets/maximize-active.svg"); }
     .titlebar .titlebutton.maximize:backdrop {
-      background: url("assets/maximize-backdrop.svg") 100% 100%; }
+      background-image: url("assets/maximize-backdrop.svg"); }
   .tiled .titlebar:not(headerbar), .tiled .titlebar:backdrop:not(headerbar), .maximized .titlebar:not(headerbar), .maximized .titlebar:backdrop:not(headerbar) {
     border-radius: 0; }