diff --git a/lib/bodyScrollLock.es6.js b/lib/bodyScrollLock.es6.js
index fa4f42b9..52b05855 100644
--- a/lib/bodyScrollLock.es6.js
+++ b/lib/bodyScrollLock.es6.js
@@ -113,7 +113,7 @@ const setPositionFixed = () => window.requestAnimationFrame(() => {
       const bottomBarHeight = innerHeight - window.innerHeight;
       if (bottomBarHeight && scrollY >= innerHeight) {
         // Move the content further up so that the bottom bar doesn't hide it
-        document.body.style.top = -(scrollY + bottomBarHeight);
+        document.body.style.top = `-${scrollY + bottomBarHeight}px`;
       }
     }), 300);
   }
diff --git a/lib/bodyScrollLock.esm.js b/lib/bodyScrollLock.esm.js
index 23518372..6d3df141 100644
--- a/lib/bodyScrollLock.esm.js
+++ b/lib/bodyScrollLock.esm.js
@@ -121,7 +121,7 @@ var setPositionFixed = function setPositionFixed() {
           var bottomBarHeight = innerHeight - window.innerHeight;
           if (bottomBarHeight && scrollY >= innerHeight) {
             // Move the content further up so that the bottom bar doesn't hide it
-            document.body.style.top = -(scrollY + bottomBarHeight);
+            document.body.style.top = '-' + (scrollY + bottomBarHeight) + 'px';
           }
         });
       }, 300);
diff --git a/lib/bodyScrollLock.js b/lib/bodyScrollLock.js
index a8dfa1f1..653fc0e8 100644
--- a/lib/bodyScrollLock.js
+++ b/lib/bodyScrollLock.js
@@ -150,7 +150,7 @@
             var bottomBarHeight = innerHeight - window.innerHeight;
             if (bottomBarHeight && scrollY >= innerHeight) {
               // Move the content further up so that the bottom bar doesn't hide it
-              document.body.style.top = -(scrollY + bottomBarHeight);
+              document.body.style.top = '-' + (scrollY + bottomBarHeight) + 'px';
             }
           });
         }, 300);
diff --git a/lib/bodyScrollLock.min.js b/lib/bodyScrollLock.min.js
index c2f200f5..7a2c1b78 100644
--- a/lib/bodyScrollLock.min.js
+++ b/lib/bodyScrollLock.min.js
@@ -1 +1 @@
-!function(e,o){if("function"==typeof define&&define.amd)define(["exports"],o);else if("undefined"!=typeof exports)o(exports);else{var t={};o(t),e.bodyScrollLock=t}}(this,function(exports){"use strict";Object.defineProperty(exports,"__esModule",{value:!0});var t=!1;if("undefined"!=typeof window){var e={get passive(){t=!0}};window.addEventListener("testPassive",null,e),window.removeEventListener("testPassive",null,e)}function d(o){return s.some(function(e){return!(!e.options.allowTouchMove||!e.options.allowTouchMove(o))})}function l(e){var o=e||window.event;return!!d(o.target)||(1<o.touches.length||(o.preventDefault&&o.preventDefault(),!1))}function n(){void 0!==m&&(document.body.style.paddingRight=m,m=void 0),void 0!==v&&(document.body.style.overflow=v,v=void 0)}function i(){if(void 0!==f){var e=-parseInt(document.body.style.top,10),o=-parseInt(document.body.style.left,10);document.body.style.position=f.position,document.body.style.top=f.top,document.body.style.left=f.left,window.scrollTo(o,e),f=void 0}}var c="undefined"!=typeof window&&window.navigator&&window.navigator.platform&&(/iP(ad|hone|od)/.test(window.navigator.platform)||"MacIntel"===window.navigator.platform&&1<window.navigator.maxTouchPoints),s=[],u=!1,a=-1,v=void 0,f=void 0,m=void 0;exports.disableBodyScroll=function(r,e){if(r){if(!s.some(function(e){return e.targetElement===r})){var o={targetElement:r,options:e||{}};s=[].concat(function(e){if(Array.isArray(e)){for(var o=0,t=Array(e.length);o<e.length;o++)t[o]=e[o];return t}return Array.from(e)}(s),[o]),c?window.requestAnimationFrame(function(){if(void 0===f){f={position:document.body.style.position,top:document.body.style.top,left:document.body.style.left};var e=window,o=e.scrollY,t=e.scrollX,n=e.innerHeight;document.body.style.position="fixed",document.body.style.top=-o+"px",document.body.style.left=-t+"px",setTimeout(function(){return window.requestAnimationFrame(function(){var e=n-window.innerHeight;e&&n<=o&&(document.body.style.top=-(o+e))})},300)}}):function(e){if(void 0===m){var o=!!e&&!0===e.reserveScrollBarGap,t=window.innerWidth-document.documentElement.clientWidth;if(o&&0<t){var n=parseInt(window.getComputedStyle(document.body).getPropertyValue("padding-right"),10);m=document.body.style.paddingRight,document.body.style.paddingRight=n+t+"px"}}void 0===v&&(v=document.body.style.overflow,document.body.style.overflow="hidden")}(e),c&&(r.ontouchstart=function(e){1===e.targetTouches.length&&(a=e.targetTouches[0].clientY)},r.ontouchmove=function(e){var o,t,n,i;1===e.targetTouches.length&&(t=r,i=(o=e).targetTouches[0].clientY-a,d(o.target)||(t&&0===t.scrollTop&&0<i||(n=t)&&n.scrollHeight-n.scrollTop<=n.clientHeight&&i<0?l(o):o.stopPropagation()))},u||(document.addEventListener("touchmove",l,t?{passive:!1}:void 0),u=!0))}}else console.error("disableBodyScroll unsuccessful - targetElement must be provided when calling disableBodyScroll on IOS devices.")},exports.clearAllBodyScrollLocks=function(){c&&(s.forEach(function(e){e.targetElement.ontouchstart=null,e.targetElement.ontouchmove=null}),u&&(document.removeEventListener("touchmove",l,t?{passive:!1}:void 0),u=!1),a=-1),(c?i:n)(),s=[]},exports.enableBodyScroll=function(o){o?(s=s.filter(function(e){return e.targetElement!==o}),c&&(o.ontouchstart=null,o.ontouchmove=null,u&&0===s.length&&(document.removeEventListener("touchmove",l,t?{passive:!1}:void 0),u=!1)),(c?i:n)()):console.error("enableBodyScroll unsuccessful - targetElement must be provided when calling enableBodyScroll on IOS devices.")}});
+!function(e,o){if("function"==typeof define&&define.amd)define(["exports"],o);else if("undefined"!=typeof exports)o(exports);else{var t={};o(t),e.bodyScrollLock=t}}(this,function(exports){"use strict";Object.defineProperty(exports,"__esModule",{value:!0});var t=!1;if("undefined"!=typeof window){var e={get passive(){t=!0}};window.addEventListener("testPassive",null,e),window.removeEventListener("testPassive",null,e)}function d(o){return s.some(function(e){return!(!e.options.allowTouchMove||!e.options.allowTouchMove(o))})}function l(e){var o=e||window.event;return!!d(o.target)||(1<o.touches.length||(o.preventDefault&&o.preventDefault(),!1))}function n(){void 0!==m&&(document.body.style.paddingRight=m,m=void 0),void 0!==v&&(document.body.style.overflow=v,v=void 0)}function i(){if(void 0!==f){var e=-parseInt(document.body.style.top,10),o=-parseInt(document.body.style.left,10);document.body.style.position=f.position,document.body.style.top=f.top,document.body.style.left=f.left,window.scrollTo(o,e),f=void 0}}var c="undefined"!=typeof window&&window.navigator&&window.navigator.platform&&(/iP(ad|hone|od)/.test(window.navigator.platform)||"MacIntel"===window.navigator.platform&&1<window.navigator.maxTouchPoints),s=[],u=!1,a=-1,v=void 0,f=void 0,m=void 0;exports.disableBodyScroll=function(r,e){if(r){if(!s.some(function(e){return e.targetElement===r})){var o={targetElement:r,options:e||{}};s=[].concat(function(e){if(Array.isArray(e)){for(var o=0,t=Array(e.length);o<e.length;o++)t[o]=e[o];return t}return Array.from(e)}(s),[o]),c?window.requestAnimationFrame(function(){if(void 0===f){f={position:document.body.style.position,top:document.body.style.top,left:document.body.style.left};var e=window,o=e.scrollY,t=e.scrollX,n=e.innerHeight;document.body.style.position="fixed",document.body.style.top=-o+"px",document.body.style.left=-t+"px",setTimeout(function(){return window.requestAnimationFrame(function(){var e=n-window.innerHeight;e&&n<=o&&(document.body.style.top="-"+(o+e)+"px")})},300)}}):function(e){if(void 0===m){var o=!!e&&!0===e.reserveScrollBarGap,t=window.innerWidth-document.documentElement.clientWidth;if(o&&0<t){var n=parseInt(window.getComputedStyle(document.body).getPropertyValue("padding-right"),10);m=document.body.style.paddingRight,document.body.style.paddingRight=n+t+"px"}}void 0===v&&(v=document.body.style.overflow,document.body.style.overflow="hidden")}(e),c&&(r.ontouchstart=function(e){1===e.targetTouches.length&&(a=e.targetTouches[0].clientY)},r.ontouchmove=function(e){var o,t,n,i;1===e.targetTouches.length&&(t=r,i=(o=e).targetTouches[0].clientY-a,d(o.target)||(t&&0===t.scrollTop&&0<i||(n=t)&&n.scrollHeight-n.scrollTop<=n.clientHeight&&i<0?l(o):o.stopPropagation()))},u||(document.addEventListener("touchmove",l,t?{passive:!1}:void 0),u=!0))}}else console.error("disableBodyScroll unsuccessful - targetElement must be provided when calling disableBodyScroll on IOS devices.")},exports.clearAllBodyScrollLocks=function(){c&&(s.forEach(function(e){e.targetElement.ontouchstart=null,e.targetElement.ontouchmove=null}),u&&(document.removeEventListener("touchmove",l,t?{passive:!1}:void 0),u=!1),a=-1),(c?i:n)(),s=[]},exports.enableBodyScroll=function(o){o?(s=s.filter(function(e){return e.targetElement!==o}),c&&(o.ontouchstart=null,o.ontouchmove=null,u&&0===s.length&&(document.removeEventListener("touchmove",l,t?{passive:!1}:void 0),u=!1)),(c?i:n)()):console.error("enableBodyScroll unsuccessful - targetElement must be provided when calling enableBodyScroll on IOS devices.")}});
diff --git a/src/bodyScrollLock.js b/src/bodyScrollLock.js
index cb4b1459..9604813b 100644
--- a/src/bodyScrollLock.js
+++ b/src/bodyScrollLock.js
@@ -76,22 +76,22 @@ const setOverflowHidden = (options?: BodyScrollOptions) => {
     const scrollBarGap = window.innerWidth - document.documentElement.clientWidth;
 
     if (reserveScrollBarGap && scrollBarGap > 0) {
-      const computedBodyPaddingRight = parseInt(window.getComputedStyle(document.body).getPropertyValue('padding-right'), 10);
-      previousBodyPaddingRight = document.body.style.paddingRight;
-      document.body.style.paddingRight = `${computedBodyPaddingRight + scrollBarGap}px`;
+      const computedBodyPaddingRight = parseInt(window.getComputedStyle(window.top.document.body).getPropertyValue('padding-right'), 10);
+      previousBodyPaddingRight = window.top.document.body.style.paddingRight;
+      window.top.document.body.style.paddingRight = `${computedBodyPaddingRight + scrollBarGap}px`;
     }
   }
 
   // If previousBodyOverflowSetting is already set, don't set it again.
   if (previousBodyOverflowSetting === undefined) {
-    previousBodyOverflowSetting = document.body.style.overflow;
-    document.body.style.overflow = 'hidden';
+    previousBodyOverflowSetting = window.top.document.body.style.overflow;
+    window.top.document.body.style.overflow = 'hidden';
   }
 };
 
 const restoreOverflowSetting = () => {
   if (previousBodyPaddingRight !== undefined) {
-    document.body.style.paddingRight = previousBodyPaddingRight;
+    window.top.document.body.style.paddingRight = previousBodyPaddingRight;
 
     // Restore previousBodyPaddingRight to undefined so setOverflowHidden knows it
     // can be set again.
@@ -99,7 +99,7 @@ const restoreOverflowSetting = () => {
   }
 
   if (previousBodyOverflowSetting !== undefined) {
-    document.body.style.overflow = previousBodyOverflowSetting;
+    window.top.document.body.style.overflow = previousBodyOverflowSetting;
 
     // Restore previousBodyOverflowSetting to undefined
     // so setOverflowHidden knows it can be set again.
@@ -111,38 +111,29 @@ const setPositionFixed = () => window.requestAnimationFrame(() => {
   // If previousBodyPosition is already set, don't set it again.
   if (previousBodyPosition === undefined) {
     previousBodyPosition = {
-      position: document.body.style.position,
-      top: document.body.style.top,
-      left: document.body.style.left
+      position: window.top.document.body.style.position,
+      top: window.top.document.body.style.top,
+      left: window.top.document.body.style.left
     };
 
     // Update the dom inside an animation frame
     const { scrollY, scrollX, innerHeight } = window;
-    document.body.style.position = 'fixed';
-    document.body.style.top = `${-scrollY}px`;
-    document.body.style.left = `${-scrollX}px`;
-
-    setTimeout(() => window.requestAnimationFrame(() => {
-      // Attempt to check if the bottom bar appeared due to the position change
-      const bottomBarHeight = innerHeight - window.innerHeight;
-      if (bottomBarHeight && scrollY >= innerHeight) {
-        // Move the content further up so that the bottom bar doesn't hide it
-        document.body.style.top = -(scrollY + bottomBarHeight);
-      }
-    }), 300)
+    window.top.document.body.style.position = 'fixed';
+    window.top.document.body.style.top = `${-scrollY}px`;
+    window.top.document.body.style.left = `${-scrollX}px`;
   }
 });
 
 const restorePositionSetting = () => {
   if (previousBodyPosition !== undefined) {
     // Convert the position from "px" to Int
-    const y = -parseInt(document.body.style.top, 10);
-    const x = -parseInt(document.body.style.left, 10);
+    const y = -parseInt(window.top.document.body.style.top, 10);
+    const x = -parseInt(window.top.document.body.style.left, 10);
 
     // Restore styles
-    document.body.style.position = previousBodyPosition.position;
-    document.body.style.top = previousBodyPosition.top;
-    document.body.style.left = previousBodyPosition.left;
+    window.top.document.body.style.position = previousBodyPosition.position;
+    window.top.document.body.style.top = previousBodyPosition.top;
+    window.top.document.body.style.left = previousBodyPosition.left;
 
     // Restore scroll
     window.scrollTo(x, y);