diff --git a/apps/common/main/lib/component/Button.js b/apps/common/main/lib/component/Button.js
index 3dd2185510..223e3f0887 100644
--- a/apps/common/main/lib/component/Button.js
+++ b/apps/common/main/lib/component/Button.js
@@ -275,7 +275,7 @@ define([
             dataHint        : '',
             dataHintDirection: '',
             dataHintOffset: '0, 0',
-            scaling         : false,
+            scaling         : true,
         },
 
         template: _.template([
@@ -344,9 +344,6 @@ define([
                 me.render();
             } else if (me.options.parentEl)
                 me.render(me.options.parentEl);
-
-            // TODO: for review scaling feature only. remove after
-            me.options.scaling = true;
         },
 
         getCaptionWithBreaks: function (caption) {
diff --git a/apps/common/main/resources/less/bigscaling.less b/apps/common/main/resources/less/bigscaling.less
index ed1a68e837..edaff40085 100644
--- a/apps/common/main/resources/less/bigscaling.less
+++ b/apps/common/main/resources/less/bigscaling.less
@@ -16,4 +16,28 @@
     svg.icon:not(.uni-scale):not(.pixel-ratio__2_5 *) {
         display: none;
     }
+}
+
+.btn-category {
+    &:active,
+    &.active {
+        &:not(.disabled) {
+            svg.icon {
+                fill: @icon-normal-pressed-ie;
+                fill: @icon-normal-pressed;
+                //.btn& {
+                //    opacity: 1;
+                //}
+            }
+        }
+    }
+
+    svg.icon {
+        fill: @icon-normal-ie;
+        fill: @icon-normal;
+
+        .btn& {
+            //opacity: 1;
+        }
+    }
 }
\ No newline at end of file
diff --git a/apps/documenteditor/main/app/view/LeftMenu.js b/apps/documenteditor/main/app/view/LeftMenu.js
index 007a072655..bcc14eec36 100644
--- a/apps/documenteditor/main/app/view/LeftMenu.js
+++ b/apps/documenteditor/main/app/view/LeftMenu.js
@@ -90,6 +90,7 @@ define([
                 el: $markup.elementById('#left-btn-searchbar'),
                 hint: this.tipSearch,
                 disabled: true,
+                iconCls: 'btn-menu-search',
                 enableToggle: true,
                 toggleGroup: 'leftMenuGroup'
             });
@@ -101,6 +102,7 @@ define([
                 hint: this.tipAbout,
                 enableToggle: true,
                 disabled: true,
+                iconCls: 'btn-menu-about',
                 toggleGroup: 'leftMenuGroup'
             });
             this.btnAbout.on('toggle',          this.onBtnMenuToggle.bind(this));
@@ -109,6 +111,7 @@ define([
                 action: 'support',
                 el: $markup.elementById('#left-btn-support'),
                 hint: this.tipSupport,
+                iconCls: 'btn-menu-support',
                 disabled: true
             });
 
@@ -118,6 +121,7 @@ define([
                 hint: this.tipComments + Common.Utils.String.platformKey('Ctrl+Shift+H'),
                 enableToggle: true,
                 disabled: true,
+                iconCls: 'btn-menu-comments',
                 toggleGroup: 'leftMenuGroup'
             });
             this.btnComments.on('click',        this.onBtnMenuClick.bind(this));
@@ -128,6 +132,7 @@ define([
                 hint: this.tipChat + Common.Utils.String.platformKey('Alt+Q', ' (' + (Common.Utils.isMac ? Common.Utils.String.textCtrl + '+' : '') + '{0})'),
                 enableToggle: true,
                 disabled: true,
+                iconCls: 'btn-menu-chat',
                 toggleGroup: 'leftMenuGroup'
             });
             this.btnChat.on('click',            this.onBtnMenuClick.bind(this));
@@ -142,6 +147,7 @@ define([
                 hint: this.tipPlugins,
                 enableToggle: true,
                 disabled: true,
+                iconCls: 'btn-menu-plugin',
                 toggleGroup: 'leftMenuGroup'
             });
             this.btnPlugins.hide();
@@ -152,6 +158,7 @@ define([
                 hint: this.tipOutline,
                 enableToggle: true,
                 disabled: true,
+                iconCls: 'btn-menu-navigation',
                 toggleGroup: 'leftMenuGroup'
             });
             this.btnNavigation.on('click',         this.onBtnMenuClick.bind(this));
@@ -164,6 +171,7 @@ define([
                 hint: this.tipPageThumbnails,
                 enableToggle: true,
                 disabled: true,
+                iconCls: 'btn-menu-thumbs',
                 toggleGroup: 'leftMenuGroup'
             });
             this.btnThumbnails.hide();