diff --git a/ViewMover/Base.lproj/Main.storyboard b/ViewMover/Base.lproj/Main.storyboard
index a0b9073..b41682a 100644
--- a/ViewMover/Base.lproj/Main.storyboard
+++ b/ViewMover/Base.lproj/Main.storyboard
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="9060" systemVersion="15B42" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="9531" systemVersion="15C50" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="9051"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="9529"/>
         <capability name="Constraints to layout margins" minToolsVersion="6.0"/>
     </dependencies>
     <scenes>
@@ -20,7 +20,6 @@
                         <subviews>
                             <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="ndj-cl-KuB">
                                 <rect key="frame" x="40" y="40" width="200" height="128"/>
-                                <animations/>
                                 <color key="backgroundColor" white="0.66666666666666663" alpha="1" colorSpace="calibratedWhite"/>
                                 <constraints>
                                     <constraint firstAttribute="width" constant="200" id="b5R-Ja-Jt2"/>
@@ -29,29 +28,21 @@
                             </view>
                             <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="Fjl-dn-Sho">
                                 <rect key="frame" x="262" y="517" width="75" height="30"/>
-                                <animations/>
                                 <state key="normal" title="Move View"/>
                                 <connections>
                                     <action selector="moveButtonTapped:" destination="BYZ-38-t0r" eventType="touchUpInside" id="orS-9d-lUG"/>
                                 </connections>
                             </button>
                         </subviews>
-                        <animations/>
                         <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
                         <constraints>
-                            <constraint firstAttribute="trailingMargin" secondItem="ndj-cl-KuB" secondAttribute="trailing" constant="20" id="2UI-mf-ijE"/>
-                            <constraint firstItem="ndj-cl-KuB" firstAttribute="top" secondItem="y3c-jy-aDJ" secondAttribute="bottom" constant="20" id="8AD-wH-hGX"/>
+                            <constraint firstAttribute="trailingMargin" secondItem="ndj-cl-KuB" secondAttribute="trailing" priority="250" constant="20" id="2UI-mf-ijE"/>
+                            <constraint firstItem="ndj-cl-KuB" firstAttribute="top" secondItem="y3c-jy-aDJ" secondAttribute="bottom" priority="750" constant="20" id="8AD-wH-hGX"/>
                             <constraint firstItem="Fjl-dn-Sho" firstAttribute="centerX" secondItem="8bC-Xf-vdC" secondAttribute="centerX" id="ITK-oc-W9e"/>
-                            <constraint firstItem="ndj-cl-KuB" firstAttribute="leading" secondItem="8bC-Xf-vdC" secondAttribute="leadingMargin" constant="20" id="J1L-Bh-h3A"/>
-                            <constraint firstItem="wfy-db-euE" firstAttribute="top" secondItem="ndj-cl-KuB" secondAttribute="bottom" constant="208" id="ML2-cm-jJA"/>
+                            <constraint firstItem="ndj-cl-KuB" firstAttribute="leading" secondItem="8bC-Xf-vdC" secondAttribute="leadingMargin" priority="750" constant="20" id="J1L-Bh-h3A"/>
+                            <constraint firstItem="wfy-db-euE" firstAttribute="top" secondItem="ndj-cl-KuB" secondAttribute="bottom" priority="250" constant="208" id="ML2-cm-jJA"/>
                             <constraint firstItem="wfy-db-euE" firstAttribute="top" secondItem="Fjl-dn-Sho" secondAttribute="bottom" constant="53" id="pzB-ps-Wm4"/>
                         </constraints>
-                        <variation key="default">
-                            <mask key="constraints">
-                                <exclude reference="2UI-mf-ijE"/>
-                                <exclude reference="ML2-cm-jJA"/>
-                            </mask>
-                        </variation>
                     </view>
                     <connections>
                         <outlet property="bottomConstraint" destination="ML2-cm-jJA" id="5Vj-Ol-C7U"/>
diff --git a/ViewMover/ViewController.m b/ViewMover/ViewController.m
index 268c762..7803b13 100644
--- a/ViewMover/ViewController.m
+++ b/ViewMover/ViewController.m
@@ -22,15 +22,24 @@ @implementation ViewController
 
 - (IBAction)moveButtonTapped:(id)sender {
     [UIView animateWithDuration:0.3 animations:^{
-        // Move to right
-        self.leadingConstraint.active = false;
-        self.trailingConstraint.active = true;
-
-        // Move to bottom
-        self.topConstraint.active = false;
-        self.bottomConstraint.active = true;
-
-        [self.view setNeedsLayout];
+        if(self.leadingConstraint.priority == UILayoutPriorityDefaultHigh){
+            // Move to right
+            self.leadingConstraint.priority = UILayoutPriorityDefaultLow;
+            self.trailingConstraint.priority = UILayoutPriorityDefaultHigh;
+            
+            // Move to bottom
+            self.topConstraint.priority = UILayoutPriorityDefaultLow;
+            self.bottomConstraint.priority = UILayoutPriorityDefaultHigh;
+        }
+        else{
+            // move back to left
+            self.leadingConstraint.priority = UILayoutPriorityDefaultHigh;
+            self.trailingConstraint.priority = UILayoutPriorityDefaultLow;
+            
+            // Move back to top
+            self.topConstraint.priority = UILayoutPriorityDefaultHigh;
+            self.bottomConstraint.priority = UILayoutPriorityDefaultLow;
+        }
         [self.view layoutIfNeeded];
     }];
 }