diff --git a/.idea/caches/build_file_checksums.ser b/.idea/caches/build_file_checksums.ser
index 84fb81f..104abea 100644
Binary files a/.idea/caches/build_file_checksums.ser and b/.idea/caches/build_file_checksums.ser differ
diff --git a/.idea/misc.xml b/.idea/misc.xml
index e0d5b93..b0c7b20 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -29,7 +29,7 @@
       </value>
     </option>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/MainActivity.java b/app/src/main/java/ru/volgorobot/vrcatalog/MainActivity.java
index c964d8f..40e2140 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/MainActivity.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/MainActivity.java
@@ -32,11 +32,9 @@ import ru.volgorobot.vrcatalog.model.FirstLevelModel;
 public class MainActivity extends AppCompatActivity
         implements NavigationView.OnNavigationItemSelectedListener, SwipeRefreshLayout.OnRefreshListener {
 
-    private AndroidTreeView treeView;
     private VRApi vrApi;
     private List<FirstLevelModel> firstLevelObjects = new ArrayList<>();
     private List<TreeNode> firstLevelNodes = new ArrayList<>();
-    private TreeNode root = TreeNode.root();
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -64,14 +62,6 @@ public class MainActivity extends AppCompatActivity
         } catch (IllegalStateException e) {
             //
         }
-
-        root.addChildren(firstLevelNodes);
-        treeView = new AndroidTreeView(MainActivity.this, root);
-        treeView.setDefaultAnimation(true);
-        ViewGroup containerView = (ViewGroup) findViewById(R.id.treeViewContainer);
-
-        containerView.addView(treeView.getView());
-
     }
 
     @Override
@@ -117,8 +107,14 @@ public class MainActivity extends AppCompatActivity
         for (int i = 0; i < firstLevelObjects.size(); i++) {
             firstLevelNodes.add(new TreeNode(firstLevelObjects.get(i).getName()));
         }
-        SwipeRefreshLayout mSwipeRefreshLayout = findViewById(R.id.swipeRefreshLayout);
-        mSwipeRefreshLayout.setRefreshing(false);
+
+        TreeNode root = TreeNode.root();
+        root.addChildren(firstLevelNodes);
+        AndroidTreeView treeView = new AndroidTreeView(MainActivity.this, root);
+        treeView.setDefaultAnimation(true);
+        treeView.setDefaultContainerStyle(R.style.TreeNodeStyle);
+        ViewGroup containerView = findViewById(R.id.treeViewContainer);
+        containerView.addView(treeView.getView());
     }
 
     @Override
@@ -146,10 +142,6 @@ public class MainActivity extends AppCompatActivity
         final SwipeRefreshLayout mSwipeRefreshLayout = findViewById(R.id.swipeRefreshLayout);
         mSwipeRefreshLayout.setRefreshing(true);
         if(clean) {
-            List<TreeNode> list = new ArrayList<>(root.getChildren());
-            for (int i = 0; i < list.size(); i++) {
-                root.deleteChild(list.get(i));
-            }
             for (int i = 0; i < firstLevelNodes.size(); i++) {
                 firstLevelNodes.remove(i);
             }