Add libhandy styles

Author: lassekongo83

gtk/src/Zukitre/gtk-3.0/_colors.scss

@@ -18,7 +18,7 @@ $top_hilight: $borders_edge;
 $dark_fill: if($variant == 'light', mix($borders_color, $bg_color, 50%), darken($base_color, 4%));
 $headerbar_color: if($variant == 'light', $bg_color, lighten($bg_color, 4%));
 $menu_color: if($variant == 'light', $base_color, mix($bg_color, $base_color, 20%));
-$popover_bg_color: $bg_color;
+$popover_bg_color: $base_color;
 $popover_hover_color: lighten($bg_color, 5%);
 
 $scrollbar_bg_color: if($variant == 'light', mix($bg_color, $fg_color, 80%), mix($base_color, $bg_color, 50%));

gtk/src/Zukitre/gtk-3.0/_common.scss

@@ -2344,7 +2344,7 @@ popover.background {
 //-----------//
 notebook {
   > header {
-    padding: 1px;
+    padding: 0px;
     border-color: $borders_color;
     border-width: if($zukitwo == 'false', 0, 1px);
     background-color: if($variant=='light', $dark_fill, darken($base_color, 4%));
@@ -2368,7 +2368,7 @@ notebook {
     &.top {
       border-bottom-style: solid;
       > tabs {
-        margin-bottom: -1px;
+        margin-bottom: 0px;
         > tab {
           &:checked {
             box-shadow: inset 1px 1px $borders_color,
@@ -2381,7 +2381,7 @@ notebook {
     &.bottom {
       border-top-style: solid;
       > tabs {
-        margin-top: -1px;
+        margin-top: 0px;
         > tab {
           &:checked {
             box-shadow: inset 1px -1px $borders_color,
@@ -2394,7 +2394,7 @@ notebook {
     &.left {
       border-right-style: solid;
       > tabs {
-        margin-right: -1px;
+        margin-right: 0px;
         > tab {
           &:checked {
             box-shadow: inset 1px 1px $borders_color,
@@ -2407,7 +2407,7 @@ notebook {
     &.right {
       border-left-style: solid;
       > tabs {
-        margin-left: -1px;
+        margin-left: 0px;
         > tab {
           &:checked {
             box-shadow: inset -1px 1px $borders_color,

gtk/src/Zukitre/gtk-3.0/_custom.scss

@@ -1,5 +1,10 @@
 // This file is used to apply some larger unofficial custom styles to the Adwaita base.
 
+// Viewport bg color
+viewport {
+  background-color: $sidebar_bg_color;
+}
+
 //---------------//
 // Title buttons //
 //---------------//