diff --git a/BottomPopup/Base.lproj/Main.storyboard b/BottomPopup/Base.lproj/Main.storyboard
index 6060c6d..bb9baad 100644
--- a/BottomPopup/Base.lproj/Main.storyboard
+++ b/BottomPopup/Base.lproj/Main.storyboard
@@ -1,12 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14313.18" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="ww0-1o-M9p">
-    <device id="retina4_7" orientation="portrait">
-        <adaptation id="fullscreen"/>
-    </device>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14868" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="ww0-1o-M9p">
+    <device id="retina4_7" orientation="portrait" appearance="light"/>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14283.14"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14824"/>
         <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="Stack View standard spacing" minToolsVersion="9.0"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <scenes>
@@ -33,7 +32,7 @@
                                 </connections>
                             </button>
                             <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" spacing="10" translatesAutoresizingMaskIntoConstraints="NO" id="fge-is-2kN">
-                                <rect key="frame" x="16" y="84" width="343" height="343.5"/>
+                                <rect key="frame" x="16" y="64" width="343" height="343.5"/>
                                 <subviews>
                                     <stackView opaque="NO" contentMode="scaleToFill" spacing="10" translatesAutoresizingMaskIntoConstraints="NO" id="TFu-M2-fgA">
                                         <rect key="frame" x="0.0" y="0.0" width="343" height="20.5"/>
@@ -158,6 +157,12 @@
                                     <action selector="showNavigationControllerTapped:" destination="BYZ-38-t0r" eventType="touchUpInside" id="m4d-mc-CEa"/>
                                 </connections>
                             </button>
+                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Label" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="SRk-50-WmY">
+                                <rect key="frame" x="0.0" y="44" width="375" height="20.5"/>
+                                <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                                <nil key="textColor"/>
+                                <nil key="highlightedColor"/>
+                            </label>
                         </subviews>
                         <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                         <constraints>
@@ -168,6 +173,9 @@
                             <constraint firstItem="6Tk-OE-BBY" firstAttribute="trailing" secondItem="7XI-BV-XdB" secondAttribute="trailing" id="QV7-k4-oFF"/>
                             <constraint firstItem="5o9-TU-tZF" firstAttribute="trailing" secondItem="6Tk-OE-BBY" secondAttribute="trailing" id="aek-P3-6d7"/>
                             <constraint firstItem="7XI-BV-XdB" firstAttribute="top" secondItem="5o9-TU-tZF" secondAttribute="bottom" id="c64-hg-yZx"/>
+                            <constraint firstItem="SRk-50-WmY" firstAttribute="trailing" secondItem="6Tk-OE-BBY" secondAttribute="trailing" id="d3j-bn-v1Y"/>
+                            <constraint firstItem="SRk-50-WmY" firstAttribute="top" secondItem="6Tk-OE-BBY" secondAttribute="top" id="ewc-fv-qev"/>
+                            <constraint firstItem="SRk-50-WmY" firstAttribute="leading" secondItem="6Tk-OE-BBY" secondAttribute="leading" id="oBW-Da-5FQ"/>
                             <constraint firstItem="7XI-BV-XdB" firstAttribute="leading" secondItem="6Tk-OE-BBY" secondAttribute="leading" id="oBX-uE-xa1"/>
                             <constraint firstItem="6Tk-OE-BBY" firstAttribute="bottom" secondItem="7XI-BV-XdB" secondAttribute="bottom" id="syr-5h-QQS"/>
                         </constraints>
@@ -198,32 +206,39 @@
                         <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <subviews>
-                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Your View Controller!" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="4yi-ws-v6P">
-                                <rect key="frame" x="71.5" y="329" width="232" height="29"/>
-                                <fontDescription key="fontDescription" name="HelveticaNeue-Medium" family="Helvetica Neue" pointSize="24"/>
-                                <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                <nil key="highlightedColor"/>
-                            </label>
-                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="Vzz-iz-lZp">
-                                <rect key="frame" x="304" y="40" width="51" height="29"/>
-                                <fontDescription key="fontDescription" name="HelveticaNeue-Medium" family="Helvetica Neue" pointSize="14"/>
-                                <state key="normal" title="Dismiss">
-                                    <color key="titleColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                </state>
-                                <connections>
-                                    <action selector="dismissButtonTapped:" destination="3mJ-BY-Hat" eventType="touchUpInside" id="nfy-6H-rHu"/>
-                                </connections>
-                            </button>
+                            <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" distribution="fillEqually" spacingType="standard" translatesAutoresizingMaskIntoConstraints="NO" id="HEk-ob-5kz">
+                                <rect key="frame" x="0.0" y="20" width="375" height="66"/>
+                                <subviews>
+                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Your View Controller!" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="4yi-ws-v6P">
+                                        <rect key="frame" x="0.0" y="0.0" width="375" height="29"/>
+                                        <fontDescription key="fontDescription" name="HelveticaNeue-Medium" family="Helvetica Neue" pointSize="24"/>
+                                        <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                        <nil key="highlightedColor"/>
+                                    </label>
+                                    <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="Vzz-iz-lZp">
+                                        <rect key="frame" x="0.0" y="37" width="375" height="29"/>
+                                        <fontDescription key="fontDescription" name="HelveticaNeue-Medium" family="Helvetica Neue" pointSize="14"/>
+                                        <state key="normal" title="Dismiss">
+                                            <color key="titleColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                        </state>
+                                        <connections>
+                                            <action selector="dismissButtonTapped:" destination="3mJ-BY-Hat" eventType="touchUpInside" id="nfy-6H-rHu"/>
+                                        </connections>
+                                    </button>
+                                </subviews>
+                            </stackView>
                         </subviews>
                         <color key="backgroundColor" red="0.95294117647058818" green="0.61176470588235299" blue="0.070588235294117646" alpha="1" colorSpace="calibratedRGB"/>
                         <constraints>
-                            <constraint firstItem="4yi-ws-v6P" firstAttribute="centerX" secondItem="5OJ-D0-52Y" secondAttribute="centerX" id="J3g-4T-Ix0"/>
-                            <constraint firstItem="5OJ-D0-52Y" firstAttribute="trailing" secondItem="Vzz-iz-lZp" secondAttribute="trailing" constant="20" id="SW7-7Q-sd8"/>
-                            <constraint firstItem="4yi-ws-v6P" firstAttribute="centerY" secondItem="5OJ-D0-52Y" secondAttribute="centerY" id="eoT-Eq-ltS"/>
-                            <constraint firstItem="Vzz-iz-lZp" firstAttribute="top" secondItem="5OJ-D0-52Y" secondAttribute="top" constant="20" id="fLd-pP-Ck4"/>
+                            <constraint firstItem="HEk-ob-5kz" firstAttribute="top" secondItem="5OJ-D0-52Y" secondAttribute="top" constant="20" id="KEh-3U-Lck"/>
+                            <constraint firstItem="HEk-ob-5kz" firstAttribute="leading" secondItem="5OJ-D0-52Y" secondAttribute="leading" id="UIB-hN-JtJ"/>
+                            <constraint firstItem="5OJ-D0-52Y" firstAttribute="trailing" secondItem="HEk-ob-5kz" secondAttribute="trailing" id="ZUa-xn-meB"/>
                         </constraints>
                         <viewLayoutGuide key="safeArea" id="5OJ-D0-52Y"/>
                     </view>
+                    <connections>
+                        <outlet property="stackView" destination="HEk-ob-5kz" id="Ruj-HF-vjU"/>
+                    </connections>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="h2U-VI-ZPM" userLabel="First Responder" sceneMemberID="firstResponder"/>
             </objects>
@@ -238,7 +253,7 @@
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <subviews>
                             <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Your Navigation Controller!" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="8Mt-CH-4Qv">
-                                <rect key="frame" x="39" y="351" width="297.5" height="29"/>
+                                <rect key="frame" x="39" y="341" width="297.5" height="29"/>
                                 <fontDescription key="fontDescription" name="HelveticaNeue-Medium" family="Helvetica Neue" pointSize="24"/>
                                 <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                                 <nil key="highlightedColor"/>
@@ -284,7 +299,7 @@
                 <navigationController automaticallyAdjustsScrollViewInsets="NO" id="ww0-1o-M9p" sceneMemberID="viewController">
                     <toolbarItems/>
                     <navigationBar key="navigationBar" contentMode="scaleToFill" insetsLayoutMarginsFromSafeArea="NO" id="cZQ-xm-n5Y">
-                        <rect key="frame" x="0.0" y="20" width="375" height="44"/>
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="44"/>
                         <autoresizingMask key="autoresizingMask"/>
                     </navigationBar>
                     <nil name="viewControllers"/>
@@ -302,7 +317,7 @@
                 <navigationController storyboardIdentifier="customNavController" automaticallyAdjustsScrollViewInsets="NO" id="Uy4-o4-jhz" customClass="ExampleNavigationController" customModule="BottomPopup" customModuleProvider="target" sceneMemberID="viewController">
                     <toolbarItems/>
                     <navigationBar key="navigationBar" contentMode="scaleToFill" insetsLayoutMarginsFromSafeArea="NO" id="7G1-Bf-ysE">
-                        <rect key="frame" x="0.0" y="20" width="375" 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/BottomPopup/BottomPopupController/BottomPopupDismissAnimator.swift b/BottomPopup/BottomPopupController/BottomPopupDismissAnimator.swift
index 249411e..2ed71ca 100644
--- a/BottomPopup/BottomPopupController/BottomPopupDismissAnimator.swift
+++ b/BottomPopup/BottomPopupController/BottomPopupDismissAnimator.swift
@@ -22,8 +22,13 @@ class BottomPopupDismissAnimator: NSObject, UIViewControllerAnimatedTransitionin
     
     func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
         let fromVC = transitionContext.viewController(forKey: .from)!
-        let dismissFrame = CGRect(origin: CGPoint(x: 0, y: UIScreen.main.bounds.size.height), size: fromVC.view.frame.size)
-        
+        let dismissFrame: CGRect!
+        switch attributesOwner.getPosition() {
+        case .top:
+            dismissFrame = CGRect(origin: CGPoint(x: 0, y: -fromVC.view.frame.height), size: fromVC.view.frame.size)
+        case .bottom:
+            dismissFrame = CGRect(origin: CGPoint(x: 0, y: UIScreen.main.bounds.size.height), size: fromVC.view.frame.size)
+        }
         UIView.animate(withDuration: transitionDuration(using: transitionContext), animations: {
             fromVC.view.frame = dismissFrame
         }) { (_) in
diff --git a/BottomPopup/BottomPopupController/BottomPopupDismissInteractionController.swift b/BottomPopup/BottomPopupController/BottomPopupDismissInteractionController.swift
index fbc5d7d..aca50d6 100644
--- a/BottomPopup/BottomPopupController/BottomPopupDismissInteractionController.swift
+++ b/BottomPopup/BottomPopupController/BottomPopupDismissInteractionController.swift
@@ -15,26 +15,27 @@ protocol BottomPopupDismissInteractionControllerDelegate: class {
 class BottomPopupDismissInteractionController: UIPercentDrivenInteractiveTransition {
     
     private let kMinPercentOfVisiblePartToCompleteAnimation = CGFloat(0.5)
-    private let kSwipeDownThreshold = CGFloat(1000)
+    private let kSwipeThreshold = CGFloat(1000)
     private weak var presentedViewController: BottomPresentableViewController?
     private weak var transitioningDelegate: BottomPopupTransitionHandler?
     weak var delegate: BottomPopupDismissInteractionControllerDelegate?
-    
+    private var position: PopupPoistion
     private var currentPercent: CGFloat = 0 {
         didSet {
             delegate?.dismissInteractionPercentChanged(from: oldValue, to: currentPercent)
         }
     }
     
-    init(presentedViewController: BottomPresentableViewController?) {
+    init(presentedViewController: BottomPresentableViewController?, position: PopupPoistion) {
         self.presentedViewController = presentedViewController
+        self.position = position
         self.transitioningDelegate = presentedViewController?.transitioningDelegate as? BottomPopupTransitionHandler
         super.init()
         preparePanGesture(in: presentedViewController?.view)
     }
     
     private func finishAnimation(withVelocity velocity: CGPoint) {
-        if currentPercent > kMinPercentOfVisiblePartToCompleteAnimation || velocity.y > kSwipeDownThreshold {
+        if currentPercent > kMinPercentOfVisiblePartToCompleteAnimation || velocity.y > kSwipeThreshold {
             finish()
         } else {
             cancel()
@@ -48,7 +49,12 @@ class BottomPopupDismissInteractionController: UIPercentDrivenInteractiveTransit
     
     @objc private func handlePanGesture(_ pan: UIPanGestureRecognizer) {
         let translationY = pan.translation(in: presentedViewController?.view).y
-        currentPercent = min(max(translationY/(presentedViewController?.view.frame.size.height ?? 0), 0), 1)
+        switch position {
+        case .top:
+            currentPercent = min(max(-translationY/(presentedViewController?.view.frame.size.height ?? 0), 0), 1)
+        case .bottom:
+            currentPercent = min(max(translationY/(presentedViewController?.view.frame.size.height ?? 0), 0), 1)
+        }
         
         switch pan.state {
         case .began:
diff --git a/BottomPopup/BottomPopupController/BottomPopupNavigationController.swift b/BottomPopup/BottomPopupController/BottomPopupNavigationController.swift
index a066c54..c98601c 100644
--- a/BottomPopup/BottomPopupController/BottomPopupNavigationController.swift
+++ b/BottomPopup/BottomPopupController/BottomPopupNavigationController.swift
@@ -37,9 +37,13 @@ open class BottomPopupNavigationController: UINavigationController, BottomPopupA
     override open func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)
         
-        curveTopCorners()
+        curveCorners()
         popupDelegate?.bottomPopupWillAppear()
     }
+    open override func viewDidLayoutSubviews() {
+        super.viewDidLayoutSubviews()
+        curveCorners()
+    }
     
     open override func viewDidAppear(_ animated: Bool) {
         super.viewDidAppear(animated)
@@ -62,13 +66,20 @@ open class BottomPopupNavigationController: UINavigationController, BottomPopupA
     //MARK: Private Methods
     
     private func initialize() {
-        transitionHandler = BottomPopupTransitionHandler(popupViewController: self)
+        transitionHandler = BottomPopupTransitionHandler(popupViewController: self, position: getPosition())
         transitioningDelegate = transitionHandler
         modalPresentationStyle = .custom
     }
     
-    private func curveTopCorners() {
-        let path = UIBezierPath(roundedRect: self.view.bounds, byRoundingCorners: [.topLeft, .topRight], cornerRadii: CGSize(width: getPopupTopCornerRadius(), height: 0))
+    private func curveCorners() {
+        var rectCorner: UIRectCorner = .allCorners
+        switch getPosition() {
+        case .top:
+            rectCorner = [.bottomLeft, .bottomRight]
+        case .bottom:
+            rectCorner = [.topLeft, .topRight]
+        }
+        let path = UIBezierPath(roundedRect: self.view.bounds, byRoundingCorners: rectCorner, cornerRadii: CGSize(width: getPopupCornerRadius(), height: 0))
         let maskLayer = CAShapeLayer()
         maskLayer.frame = self.view.bounds
         maskLayer.path = path.cgPath
@@ -85,7 +96,7 @@ open class BottomPopupNavigationController: UINavigationController, BottomPopupA
         return BottomPopupConstants.kDefaultHeight
     }
     
-    open func getPopupTopCornerRadius() -> CGFloat {
+    open func getPopupCornerRadius() -> CGFloat {
         return BottomPopupConstants.kDefaultTopCornerRadius
     }
     
@@ -96,8 +107,16 @@ open class BottomPopupNavigationController: UINavigationController, BottomPopupA
     open func getPopupDismissDuration() -> Double {
         return BottomPopupConstants.kDefaultDismissDuration
     }
+    open func getPosition() -> PopupPoistion {
+        .bottom
+    }
     
     open func getDimmingViewAlpha() -> CGFloat {
         return BottomPopupConstants.kDimmingViewDefaultAlphaValue
     }
 }
+extension BottomPopupNavigationController {
+    func setupHeight(to height: CGFloat) {
+        transitionHandler?.setHeight(to: height)
+    }
+}
diff --git a/BottomPopup/BottomPopupController/BottomPopupPresentAnimator.swift b/BottomPopup/BottomPopupController/BottomPopupPresentAnimator.swift
index f96fb55..e0db613 100644
--- a/BottomPopup/BottomPopupController/BottomPopupPresentAnimator.swift
+++ b/BottomPopup/BottomPopupController/BottomPopupPresentAnimator.swift
@@ -24,7 +24,13 @@ class BottomPopupPresentAnimator: NSObject, UIViewControllerAnimatedTransitionin
         let toVC = transitionContext.viewController(forKey: .to)!
         transitionContext.containerView.addSubview(toVC.view)
         let presentFrame = transitionContext.finalFrame(for: toVC)
-        let initialFrame = CGRect(origin: CGPoint(x: 0, y: UIScreen.main.bounds.size.height), size: presentFrame.size)
+        var initialFrame: CGRect
+        switch attributesOwner.getPosition() {
+        case .top:
+            initialFrame = CGRect(origin: CGPoint(x: 0, y: -presentFrame.height), size: presentFrame.size)
+        case .bottom:
+            initialFrame = CGRect(origin: CGPoint(x: 0, y: UIScreen.main.bounds.height), size: presentFrame.size)
+        }
         toVC.view.frame = initialFrame
         UIView.animate(withDuration: transitionDuration(using: transitionContext), animations: {
             toVC.view.frame = presentFrame
diff --git a/BottomPopup/BottomPopupController/BottomPopupPresentationController.swift b/BottomPopup/BottomPopupController/BottomPopupPresentationController.swift
index b883897..b3a6e40 100644
--- a/BottomPopup/BottomPopupController/BottomPopupPresentationController.swift
+++ b/BottomPopup/BottomPopupController/BottomPopupPresentationController.swift
@@ -11,12 +11,18 @@ import UIKit
 class BottomPopupPresentationController: UIPresentationController {
     
     fileprivate var dimmingView: UIView!
-    fileprivate let popupHeight: CGFloat
+    fileprivate var popupHeight: CGFloat
+    fileprivate let position: PopupPoistion
     fileprivate let dimmingViewAlpha: CGFloat
     
     override var frameOfPresentedViewInContainerView: CGRect {
         get {
-            return CGRect(origin: CGPoint(x: 0, y: UIScreen.main.bounds.size.height - popupHeight), size: CGSize(width: presentedViewController.view.frame.size.width, height: popupHeight))
+            switch position {
+            case .top:
+                return CGRect(origin: CGPoint(x: 0, y: 0), size: CGSize(width: presentedViewController.view.frame.size.width, height: popupHeight))
+            case .bottom:
+                return CGRect(origin: CGPoint(x: 0, y: UIScreen.main.bounds.height - popupHeight), size: CGSize(width: presentedViewController.view.frame.size.width, height: popupHeight))
+            }
         }
     }
     
@@ -31,9 +37,10 @@ class BottomPopupPresentationController: UIPresentationController {
         })
     }
     
-    init(presentedViewController: UIViewController, presenting presentingViewController: UIViewController?, usingHeight height: CGFloat, andDimmingViewAlpha dimmingAlpha: CGFloat) {
+    init(presentedViewController: UIViewController, presenting presentingViewController: UIViewController?, usingHeight height: CGFloat, andDimmingViewAlpha dimmingAlpha: CGFloat, position: PopupPoistion) {
         self.popupHeight = height
         self.dimmingViewAlpha = dimmingAlpha
+        self.position = position
         super.init(presentedViewController: presentedViewController, presenting: presentingViewController)
         setupDimmingView()
     }
@@ -67,3 +74,10 @@ private extension BottomPopupPresentationController {
         dimmingView.addGestureRecognizer(tapGesture)
     }
 }
+//MARK: - dynamic height based on autolayout -
+extension BottomPopupPresentationController {
+    func setHeight(to height: CGFloat) {
+        self.popupHeight = height
+        containerViewWillLayoutSubviews()
+    }
+}
diff --git a/BottomPopup/BottomPopupController/BottomPopupTransitionHandler.swift b/BottomPopup/BottomPopupController/BottomPopupTransitionHandler.swift
index 88aa888..acc1fe6 100644
--- a/BottomPopup/BottomPopupController/BottomPopupTransitionHandler.swift
+++ b/BottomPopup/BottomPopupController/BottomPopupTransitionHandler.swift
@@ -15,12 +15,14 @@ class BottomPopupTransitionHandler: NSObject, UIViewControllerTransitioningDeleg
     private var interactionController: BottomPopupDismissInteractionController?
     private unowned var popupViewController: BottomPresentableViewController
     fileprivate weak var popupDelegate: BottomPopupDelegate?
+    private let position: PopupPoistion
     
     var isInteractiveDismissStarted = false
+    var bottomPopupPresentationController: BottomPopupPresentationController?
     
-    init(popupViewController: BottomPresentableViewController) {
+    init(popupViewController: BottomPresentableViewController, position: PopupPoistion) {
         self.popupViewController = popupViewController
-        
+        self.position = position
         presentAnimator = BottomPopupPresentAnimator(attributesOwner: popupViewController)
         dismissAnimator = BottomPopupDismissAnimator(attributesOwner: popupViewController)
     }
@@ -29,14 +31,15 @@ class BottomPopupTransitionHandler: NSObject, UIViewControllerTransitioningDeleg
     func notifyViewLoaded(withPopupDelegate delegate: BottomPopupDelegate?) {
         self.popupDelegate = delegate
         if popupViewController.shouldPopupDismissInteractivelty() {
-            interactionController = BottomPopupDismissInteractionController(presentedViewController: popupViewController)
+            interactionController = BottomPopupDismissInteractionController(presentedViewController: popupViewController, position: position)
             interactionController?.delegate = self
         }
     }
     
     //MARK: Specific animators
     func presentationController(forPresented presented: UIViewController, presenting: UIViewController?, source: UIViewController) -> UIPresentationController? {
-        return BottomPopupPresentationController(presentedViewController: presented, presenting: presenting, usingHeight: popupViewController.getPopupHeight(), andDimmingViewAlpha: popupViewController.getDimmingViewAlpha())
+        bottomPopupPresentationController = BottomPopupPresentationController(presentedViewController: presented, presenting: presenting, usingHeight: popupViewController.getPopupHeight(), andDimmingViewAlpha: popupViewController.getDimmingViewAlpha(), position: position)
+        return bottomPopupPresentationController
     }
     
     func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
@@ -57,3 +60,8 @@ extension BottomPopupTransitionHandler: BottomPopupDismissInteractionControllerD
         popupDelegate?.bottomPopupDismissInteractionPercentChanged(from: oldValue, to: newValue)
     }
 }
+extension BottomPopupTransitionHandler {
+    func setHeight(to height: CGFloat) {
+        bottomPopupPresentationController?.setHeight(to: height)
+    }
+}
diff --git a/BottomPopup/BottomPopupController/BottomPopupUtils.swift b/BottomPopup/BottomPopupController/BottomPopupUtils.swift
index 8ec24ed..22545f8 100644
--- a/BottomPopup/BottomPopupController/BottomPopupUtils.swift
+++ b/BottomPopup/BottomPopupController/BottomPopupUtils.swift
@@ -9,7 +9,10 @@
 import UIKit
 
 typealias BottomPresentableViewController = BottomPopupAttributesDelegate & UIViewController
-
+public enum PopupPoistion {
+    case top
+    case bottom
+}
 public protocol BottomPopupDelegate: class {
     func bottomPopupViewLoaded()
     func bottomPopupWillAppear()
@@ -30,11 +33,12 @@ public extension BottomPopupDelegate {
 
 public protocol BottomPopupAttributesDelegate: class {
     func getPopupHeight() -> CGFloat
-    func getPopupTopCornerRadius() -> CGFloat
+    func getPopupCornerRadius() -> CGFloat
     func getPopupPresentDuration() -> Double
     func getPopupDismissDuration() -> Double
     func shouldPopupDismissInteractivelty() -> Bool
     func getDimmingViewAlpha() -> CGFloat
+    func getPosition() -> PopupPoistion
 }
 
 public struct BottomPopupConstants {
diff --git a/BottomPopup/BottomPopupController/BottomPopupViewController.swift b/BottomPopup/BottomPopupController/BottomPopupViewController.swift
index 8fad1e0..9203bc0 100644
--- a/BottomPopup/BottomPopupController/BottomPopupViewController.swift
+++ b/BottomPopup/BottomPopupController/BottomPopupViewController.swift
@@ -37,9 +37,13 @@ open class BottomPopupViewController: UIViewController, BottomPopupAttributesDel
     open override  func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)
         
-        curveTopCorners()
+        curveCorners()
         popupDelegate?.bottomPopupWillAppear()
     }
+    open override func viewDidLayoutSubviews() {
+        super.viewDidLayoutSubviews()
+        curveCorners()
+    }
     
     open override func viewDidAppear(_ animated: Bool) {
         super.viewDidAppear(animated)
@@ -62,13 +66,20 @@ open class BottomPopupViewController: UIViewController, BottomPopupAttributesDel
     //MARK: Private Methods
     
     private func initialize() {
-        transitionHandler = BottomPopupTransitionHandler(popupViewController: self)
+        transitionHandler = BottomPopupTransitionHandler(popupViewController: self, position: getPosition())
         transitioningDelegate = transitionHandler
         modalPresentationStyle = .custom
     }
     
-    private func curveTopCorners() {
-        let path = UIBezierPath(roundedRect: self.view.bounds, byRoundingCorners: [.topLeft, .topRight], cornerRadii: CGSize(width: getPopupTopCornerRadius(), height: 0))
+    private func curveCorners() {
+        var rectCorner: UIRectCorner = .allCorners
+        switch getPosition() {
+        case .top:
+            rectCorner = [.bottomLeft, .bottomRight]
+        case .bottom:
+            rectCorner = [.topLeft, .topRight]
+        }
+        let path = UIBezierPath(roundedRect: self.view.bounds, byRoundingCorners: rectCorner, cornerRadii: CGSize(width: getPopupCornerRadius(), height: 0))
         let maskLayer = CAShapeLayer()
         maskLayer.frame = self.view.bounds
         maskLayer.path = path.cgPath
@@ -85,14 +96,16 @@ open class BottomPopupViewController: UIViewController, BottomPopupAttributesDel
         return BottomPopupConstants.kDefaultHeight
     }
     
-    open func getPopupTopCornerRadius() -> CGFloat {
+    open func getPopupCornerRadius() -> CGFloat {
         return BottomPopupConstants.kDefaultTopCornerRadius
     }
     
     open func getPopupPresentDuration() -> Double {
         return BottomPopupConstants.kDefaultPresentDuration
     }
-    
+    open func getPosition() -> PopupPoistion {
+        .bottom
+    }
     open func getPopupDismissDuration() -> Double {
         return BottomPopupConstants.kDefaultDismissDuration
     }
@@ -101,3 +114,8 @@ open class BottomPopupViewController: UIViewController, BottomPopupAttributesDel
         return BottomPopupConstants.kDimmingViewDefaultAlphaValue
     }
 }
+extension BottomPopupViewController {
+    func setupHeight(to height: CGFloat) {
+        transitionHandler?.setHeight(to: height)
+    }
+}
diff --git a/BottomPopup/ExampleNavigationController.swift b/BottomPopup/ExampleNavigationController.swift
index a68b64f..80570dd 100644
--- a/BottomPopup/ExampleNavigationController.swift
+++ b/BottomPopup/ExampleNavigationController.swift
@@ -20,7 +20,7 @@ class ExampleNavigationController: BottomPopupNavigationController {
         return height ?? CGFloat(300)
     }
     
-    override func getPopupTopCornerRadius() -> CGFloat {
+    override func getPopupCornerRadius() -> CGFloat {
         return topCornerRadius ?? CGFloat(10)
     }
     
diff --git a/BottomPopup/ExamplePopupViewController.swift b/BottomPopup/ExamplePopupViewController.swift
index 13db15e..786df81 100644
--- a/BottomPopup/ExamplePopupViewController.swift
+++ b/BottomPopup/ExamplePopupViewController.swift
@@ -15,6 +15,7 @@ class ExamplePopupViewController: BottomPopupViewController {
     var presentDuration: Double?
     var dismissDuration: Double?
     var shouldDismissInteractivelty: Bool?
+    @IBOutlet weak var stackView: UIStackView!
     
     @IBAction func dismissButtonTapped(_ sender: UIButton) {
         dismiss(animated: true, completion: nil)
@@ -27,17 +28,24 @@ class ExamplePopupViewController: BottomPopupViewController {
         return height ?? CGFloat(300)
     }
     
-    override func getPopupTopCornerRadius() -> CGFloat {
+    override func getPopupCornerRadius() -> CGFloat {
         return topCornerRadius ?? CGFloat(10)
     }
     
     override func getPopupPresentDuration() -> Double {
         return presentDuration ?? 1.0
     }
+    override func getPosition() -> PopupPoistion {
+        return .top
+    }
     
     override func getPopupDismissDuration() -> Double {
         return dismissDuration ?? 1.0
     }
+    override func viewDidLayoutSubviews() {
+        super.viewDidLayoutSubviews()
+        setupHeight(to: stackView.frame.height + 100)
+    }
     
     override func shouldPopupDismissInteractivelty() -> Bool {
         return shouldDismissInteractivelty ?? true