diff --git a/DropdownMenu/DropdownMenu.swift b/DropdownMenu/DropdownMenu.swift
index 0022bf3..09d1a99 100644
--- a/DropdownMenu/DropdownMenu.swift
+++ b/DropdownMenu/DropdownMenu.swift
@@ -54,10 +54,16 @@ open class DropdownMenu: UIView {
     private let iPhoneXPortraitTopOffset: CGFloat = 88.0
     private let portraitTopOffset: CGFloat = 64.0
     private let landscapeTopOffset: CGFloat = 32.0
+    
     private var topLayoutConstraintConstant: CGFloat {
         var offset: CGFloat = 0
         if !navigationController.isNavigationBarHidden {
-          offset = navigationController.navigationBar.frame.height + navigationController.navigationBar.frame.origin.y
+            if let navigationBarWindow = navigationController.view.window {
+                let convertRect = navigationController.view.convert(navigationController.navigationBar.frame, to: navigationBarWindow)
+                offset = convertRect.height + convertRect.origin.y
+            } else {
+                offset = navigationController.navigationBar.frame.height + navigationController.navigationBar.frame.origin.y
+            }
         }
         return offset + topOffsetY
     }
@@ -165,7 +171,6 @@ open class DropdownMenu: UIView {
     }
     
     @objc func updateForOrientationChange(_ nofication: Notification) {
-        print("UIApplicationWillChangeStatusBarOrientation")
         if let oriention = (nofication as NSNotification).userInfo?[UIApplication.statusBarOrientationUserInfoKey] as? Int {
             var topOffset: CGFloat
             switch oriention {
diff --git a/DropdownMenuDemo/DropdownMenuDemo/Assets.xcassets/AppIcon.appiconset/Contents.json b/DropdownMenuDemo/DropdownMenuDemo/Assets.xcassets/AppIcon.appiconset/Contents.json
index eeea76c..d8db8d6 100644
--- a/DropdownMenuDemo/DropdownMenuDemo/Assets.xcassets/AppIcon.appiconset/Contents.json
+++ b/DropdownMenuDemo/DropdownMenuDemo/Assets.xcassets/AppIcon.appiconset/Contents.json
@@ -1,5 +1,15 @@
 {
   "images" : [
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "3x"
+    },
     {
       "idiom" : "iphone",
       "size" : "29x29",
@@ -30,6 +40,16 @@
       "size" : "60x60",
       "scale" : "3x"
     },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
     {
       "idiom" : "ipad",
       "size" : "29x29",
@@ -64,6 +84,11 @@
       "idiom" : "ipad",
       "size" : "83.5x83.5",
       "scale" : "2x"
+    },
+    {
+      "idiom" : "ios-marketing",
+      "size" : "1024x1024",
+      "scale" : "1x"
     }
   ],
   "info" : {
diff --git a/DropdownMenuDemo/DropdownMenuDemo/Base.lproj/Main.storyboard b/DropdownMenuDemo/DropdownMenuDemo/Base.lproj/Main.storyboard
index 8d143d5..6ef051f 100644
--- a/DropdownMenuDemo/DropdownMenuDemo/Base.lproj/Main.storyboard
+++ b/DropdownMenuDemo/DropdownMenuDemo/Base.lproj/Main.storyboard
@@ -1,19 +1,16 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="11542" systemVersion="16B2555" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="bEP-BO-oRt">
-    <device id="retina4_7" orientation="portrait">
-        <adaptation id="fullscreen"/>
-    </device>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="15505" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="bEP-BO-oRt">
+    <device id="retina4_7" orientation="portrait" appearance="light"/>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="11524"/>
-        <capability name="Constraints to layout margins" minToolsVersion="6.0"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="15510"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <scenes>
         <!--View Controller-->
         <scene sceneID="tne-QT-ifu">
             <objects>
-                <viewController id="BYZ-38-t0r" customClass="ViewController" customModule="DropdownMenuDemo" customModuleProvider="target" sceneMemberID="viewController">
+                <viewController storyboardIdentifier="ViewController" id="BYZ-38-t0r" customClass="ViewController" customModule="DropdownMenuDemo" customModuleProvider="target" sceneMemberID="viewController">
                     <layoutGuides>
                         <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
                         <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
@@ -23,41 +20,48 @@
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <subviews>
                             <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="have sections" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="BzP-Ey-vYz">
-                                <rect key="frame" x="138" y="160" width="100" height="20"/>
+                                <rect key="frame" x="137.5" y="140" width="100" height="20"/>
                                 <fontDescription key="fontDescription" type="system" pointSize="16"/>
                                 <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                                 <nil key="highlightedColor"/>
                             </label>
                             <switch opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="750" verticalHuggingPriority="750" contentHorizontalAlignment="center" contentVerticalAlignment="center" on="YES" translatesAutoresizingMaskIntoConstraints="NO" id="25g-q9-wVt">
-                                <rect key="frame" x="163" y="188" width="51" height="31"/>
+                                <rect key="frame" x="163" y="168" width="51" height="31"/>
                                 <connections>
                                     <action selector="sectionSwitchValueChanged:" destination="BYZ-38-t0r" eventType="valueChanged" id="yt0-i8-kxP"/>
                                 </connections>
                             </switch>
                             <slider opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" minValue="0.0" maxValue="100" translatesAutoresizingMaskIntoConstraints="NO" id="PVH-7j-Yyz">
-                                <rect key="frame" x="44" y="120" width="287" height="31"/>
+                                <rect key="frame" x="44" y="100" width="287" height="31"/>
                                 <connections>
                                     <action selector="changeOffsetAction:" destination="BYZ-38-t0r" eventType="valueChanged" id="Qpj-wW-J0V"/>
                                 </connections>
                             </slider>
                             <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="DropDownMenu Top Offset: 0" textAlignment="natural" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="Ymy-Wm-YFe">
-                                <rect key="frame" x="85.5" y="82" width="204.5" height="18"/>
+                                <rect key="frame" x="85.5" y="62" width="204" height="18"/>
                                 <fontDescription key="fontDescription" type="system" pointSize="15"/>
                                 <nil key="textColor"/>
                                 <nil key="highlightedColor"/>
                             </label>
                             <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="0" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="nuX-bM-BJi">
-                                <rect key="frame" x="27.5" y="125" width="10.5" height="21"/>
+                                <rect key="frame" x="27.5" y="105" width="10.5" height="21"/>
                                 <fontDescription key="fontDescription" type="system" pointSize="17"/>
                                 <nil key="textColor"/>
                                 <nil key="highlightedColor"/>
                             </label>
                             <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="100" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="UPa-at-gEy">
-                                <rect key="frame" x="338" y="125" width="29" height="21"/>
+                                <rect key="frame" x="338" y="105" width="29" height="21"/>
                                 <fontDescription key="fontDescription" type="system" pointSize="17"/>
                                 <nil key="textColor"/>
                                 <nil key="highlightedColor"/>
                             </label>
+                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="dNE-bH-i5L">
+                                <rect key="frame" x="131.5" y="318.5" width="112" height="30"/>
+                                <state key="normal" title="Present New VC"/>
+                                <connections>
+                                    <action selector="presentAction:" destination="BYZ-38-t0r" eventType="touchUpInside" id="X7w-rA-VlG"/>
+                                </connections>
+                            </button>
                         </subviews>
                         <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                         <constraints>
@@ -65,12 +69,14 @@
                             <constraint firstItem="PVH-7j-Yyz" firstAttribute="leading" secondItem="8bC-Xf-vdC" secondAttribute="leadingMargin" constant="30" id="0Lu-c0-q3U"/>
                             <constraint firstItem="Ymy-Wm-YFe" firstAttribute="top" secondItem="y3c-jy-aDJ" secondAttribute="bottom" constant="18" id="45G-S5-ZiT"/>
                             <constraint firstAttribute="trailingMargin" secondItem="PVH-7j-Yyz" secondAttribute="trailing" constant="30" id="4t7-hS-eoX"/>
+                            <constraint firstItem="dNE-bH-i5L" firstAttribute="centerY" secondItem="8bC-Xf-vdC" secondAttribute="centerY" id="6P6-hj-hNa"/>
                             <constraint firstAttribute="trailing" secondItem="UPa-at-gEy" secondAttribute="trailing" constant="8" id="7wh-Fk-E7w"/>
                             <constraint firstItem="PVH-7j-Yyz" firstAttribute="leading" secondItem="nuX-bM-BJi" secondAttribute="trailing" constant="8" id="Oi0-1S-YG7"/>
                             <constraint firstItem="PVH-7j-Yyz" firstAttribute="centerX" secondItem="8bC-Xf-vdC" secondAttribute="centerX" id="Q1c-nW-fIa"/>
                             <constraint firstItem="nuX-bM-BJi" firstAttribute="top" secondItem="y3c-jy-aDJ" secondAttribute="bottom" constant="61" id="Yfw-xR-7zO"/>
                             <constraint firstItem="UPa-at-gEy" firstAttribute="top" secondItem="y3c-jy-aDJ" secondAttribute="bottom" constant="61" id="Zxl-Jb-fWH"/>
                             <constraint firstItem="PVH-7j-Yyz" firstAttribute="top" secondItem="Ymy-Wm-YFe" secondAttribute="bottom" constant="20" id="cN4-3J-XBo"/>
+                            <constraint firstItem="dNE-bH-i5L" firstAttribute="centerX" secondItem="8bC-Xf-vdC" secondAttribute="centerX" id="fF6-gV-9gO"/>
                             <constraint firstItem="Ymy-Wm-YFe" firstAttribute="centerX" secondItem="8bC-Xf-vdC" secondAttribute="centerX" id="n3a-uW-YJF"/>
                             <constraint firstItem="25g-q9-wVt" firstAttribute="centerX" secondItem="BzP-Ey-vYz" secondAttribute="centerX" id="uiI-Kb-AoW"/>
                             <constraint firstItem="25g-q9-wVt" firstAttribute="top" secondItem="BzP-Ey-vYz" secondAttribute="bottom" constant="8" id="y3J-U1-nOz"/>
@@ -106,7 +112,7 @@
                     <tabBarItem key="tabBarItem" systemItem="mostViewed" id="2Qg-IJ-NSJ"/>
                     <toolbarItems/>
                     <navigationBar key="navigationBar" contentMode="scaleToFill" id="Bav-Hk-j9K">
-                        <rect key="frame" x="0.0" y="0.0" width="320" height="44"/>
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="44"/>
                         <autoresizingMask key="autoresizingMask"/>
                     </navigationBar>
                     <nil name="viewControllers"/>
@@ -131,7 +137,7 @@
                                 <rect key="frame" x="0.0" y="28" width="375" height="44"/>
                                 <autoresizingMask key="autoresizingMask"/>
                                 <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="0qN-ja-FGY" id="TCk-ux-5Dk">
-                                    <rect key="frame" x="0.0" y="0.0" width="375" height="43"/>
+                                    <rect key="frame" x="0.0" y="0.0" width="375" height="44"/>
                                     <autoresizingMask key="autoresizingMask"/>
                                 </tableViewCellContentView>
                             </tableViewCell>
@@ -173,7 +179,7 @@
                     <tabBarItem key="tabBarItem" systemItem="featured" id="ou2-cE-6o6"/>
                     <toolbarItems/>
                     <navigationBar key="navigationBar" contentMode="scaleToFill" id="LSv-v6-4TW">
-                        <rect key="frame" x="0.0" y="0.0" width="320" height="44"/>
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="44"/>
                         <autoresizingMask key="autoresizingMask"/>
                     </navigationBar>
                     <nil name="viewControllers"/>
diff --git a/DropdownMenuDemo/DropdownMenuDemo/ViewController.swift b/DropdownMenuDemo/DropdownMenuDemo/ViewController.swift
index 52fc596..214ba15 100644
--- a/DropdownMenuDemo/DropdownMenuDemo/ViewController.swift
+++ b/DropdownMenuDemo/DropdownMenuDemo/ViewController.swift
@@ -75,6 +75,11 @@ class ViewController: UIViewController {
     @IBAction func sectionSwitchValueChanged(_ sender: AnyObject) {
         showSection = sectionSwitch.isOn
     }
+    
+    @IBAction func presentAction(_ sender: Any) {
+        let vc = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "ViewController")
+        present(UINavigationController(rootViewController: vc), animated: true, completion: nil)
+    }
 }
 
 extension ViewController: DropdownMenuDelegate {