Merge remote-tracking branch 'origin/MAGETWO-44863' into PR-4

Author: Natalia Momotenko

app/design/adminhtml/Magento/backend/Magento_Catalog/web/css/source/_module.less

@@ -51,3 +51,18 @@ div.removed,
         width: auto; // IE9 width fix
     }
 }
+
+//
+//  Create attribute panel iframe page configuration
+//  ---------------------------------------------
+
+.catalog-product-attribute-edit {
+    &.attribute-popup {
+        .page-wrapper {
+            width: 100%;
+            .page-content {
+                padding-left: 0;
+            }
+        }
+    }
+}

app/design/adminhtml/Magento/backend/web/css/source/components/_popups.less

@@ -389,15 +389,6 @@
 //  Attribute Popup
 //  _____________________________________________
 
-.catalog-product-attribute-edit {
-    .page-wrapper {
-        width: 100%;
-        .page-content {
-            padding-left: 0;
-        }
-    }
-}
-
 .attribute-popup-actions { // ToDo UI: remove or refactor after New attribute popup refactored to sliding panel
     &:extend(.abs-clearfix all);
     background: @page-main-actions__background-color;