diff --git a/apps/common/main/lib/util/htmlutils.js b/apps/common/main/lib/util/htmlutils.js
index 36a91080a5..ab885cfaf1 100644
--- a/apps/common/main/lib/util/htmlutils.js
+++ b/apps/common/main/lib/util/htmlutils.js
@@ -1,9 +1,19 @@
 
 function checkScaling() {
-    var str_mq_150 = "screen and (-webkit-min-device-pixel-ratio: 1.5) and (-webkit-max-device-pixel-ratio: 1.9), " +
-        "screen and (min-resolution: 1.5dppx) and (max-resolution: 1.9dppx)";
-    if ( window.matchMedia(str_mq_150).matches ) {
-        document.body.classList.add('pixel-ratio__1_5');
+    var matches = {
+        'pixel-ratio__1_25': "screen and (-webkit-min-device-pixel-ratio: 1.25) and (-webkit-max-device-pixel-ratio: 1.49), " +
+                                "screen and (min-resolution: 1.25dppx) and (max-resolution: 1.49dppx)",
+        'pixel-ratio__1_5': "screen and (-webkit-min-device-pixel-ratio: 1.5) and (-webkit-max-device-pixel-ratio: 1.74), " +
+                                "screen and (min-resolution: 1.5dppx) and (max-resolution: 1.74dppx)",
+        'pixel-ratio__1_75': "screen and (-webkit-min-device-pixel-ratio: 1.75) and (-webkit-max-device-pixel-ratio: 1.99), " +
+                                "screen and (min-resolution: 1.75dppx) and (max-resolution: 1.99dppx)",
+    };
+
+    for (var c in matches) {
+        if ( window.matchMedia(matches[c]).matches ) {
+            document.body.classList.add(c);
+            break;
+        }
     }
 
     if ( !window.matchMedia("screen and (-webkit-device-pixel-ratio: 1.5)," +
diff --git a/apps/common/main/lib/util/utils.js b/apps/common/main/lib/util/utils.js
index ec6f0c9756..bedc085708 100644
--- a/apps/common/main/lib/util/utils.js
+++ b/apps/common/main/lib/util/utils.js
@@ -136,29 +136,56 @@ var utils = new(function() {
                 scale = window.AscCommon.checkDeviceScale();
                 AscCommon.correctApplicationScale(scale);
             } else {
-                var str_mq_150 = "screen and (-webkit-min-device-pixel-ratio: 1.5) and (-webkit-max-device-pixel-ratio: 1.9), " +
-                        "screen and (min-resolution: 1.5dppx) and (max-resolution: 1.9dppx)";
+                var str_mq_125 = "screen and (-webkit-min-device-pixel-ratio: 1.25) and (-webkit-max-device-pixel-ratio: 1.49), " +
+                        "screen and (min-resolution: 1.25dppx) and (max-resolution: 1.49dppx)";
+                var str_mq_150 = "screen and (-webkit-min-device-pixel-ratio: 1.5) and (-webkit-max-device-pixel-ratio: 1.74), " +
+                        "screen and (min-resolution: 1.5dppx) and (max-resolution: 1.74dppx)";
+                var str_mq_175 = "screen and (-webkit-min-device-pixel-ratio: 1.75) and (-webkit-max-device-pixel-ratio: 1.99), " +
+                        "screen and (min-resolution: 1.75dppx) and (max-resolution: 1.99dppx)";
                 var str_mq_200 = "screen and (-webkit-min-device-pixel-ratio: 2), " +
                         "screen and (min-resolution: 2dppx), screen and (min-resolution: 192dpi)";
 
+                if ( window.matchMedia(str_mq_125).matches ) {
+                    scale.devicePixelRatio = 1.5;
+                } else
                 if ( window.matchMedia(str_mq_150).matches ) {
                     scale.devicePixelRatio = 1.5;
                 } else
+                if ( window.matchMedia(str_mq_175).matches ) {
+                    scale.devicePixelRatio = 1.75;
+                } else
                 if ( window.matchMedia(str_mq_200).matches )
                     scale.devicePixelRatio = 2;
                 else scale.devicePixelRatio = 1;
             }
 
             var $root = $(document.body);
-            if ( scale.devicePixelRatio < 1.5 ) {
-                $root.removeClass('pixel-ratio__1_5 pixel-ratio__2');
+            var classes = document.body.className;
+            var clear_list = classes.replace(/pixel-ratio__[\w-]+/gi,'').trim();
+            if ( scale.devicePixelRatio < 1.25 ) {
+                 if ( /pixel-ratio__/.test(classes) ) {
+                     document.body.className = clear_list;
+                 }
             } else
-            if ( !(scale.devicePixelRatio < 1.5) && scale.devicePixelRatio < 2 ) {
-                $root.removeClass('pixel-ratio__2');
-                $root.addClass('pixel-ratio__1_5');
+            if ( scale.devicePixelRatio < 1.5 ) {
+                if ( !/pixel-ratio__1_25/.test(classes) ) {
+                    document.body.className = clear_list + ' pixel-ratio__1_25';
+                }
+            } else
+            if ( scale.devicePixelRatio < 1.75 ) {
+                if ( !/pixel-ratio__1_5/.test(classes) ) {
+                    document.body.className = clear_list + ' pixel-ratio__1_5';
+                }
+            } else
+            if ( !(scale.devicePixelRatio < 1.75) && scale.devicePixelRatio < 2 ) {
+                if ( !/pixel-ratio__1_75/.test(classes) ) {
+                    document.body.className = clear_list + ' pixel-ratio__1_75';
+                }
             } else {
                 $root.addClass('pixel-ratio__2');
-                $root.removeClass('pixel-ratio__1_5');
+                if ( !/pixel-ratio__2/.test(classes) ) {
+                    document.body.className = clear_list + ' pixel-ratio__2';
+                }
             }
 
             me.zoom = scale.correct ? scale.zoom : 1;