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diff --git a/js/tests/unit/util/scrollbar.spec.js b/js/tests/unit/util/scrollbar.spec.js
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+++ b/js/tests/unit/util/scrollbar.spec.js
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+import { clearBodyAndDocument, clearFixture, getFixture } from '../../helpers/fixture'
+import Manipulator from '../../../src/dom/manipulator'
+import ScrollBarHelper from '../../../src/util/scrollbar'
+
+describe('ScrollBar', () => {
+  let fixtureEl
+  const doc = document.documentElement
+  const parseIntDecimal = arg => Number.parseInt(arg, 10)
+  const getPaddingX = el => parseIntDecimal(window.getComputedStyle(el).paddingRight)
+  const getMarginX = el => parseIntDecimal(window.getComputedStyle(el).marginRight)
+  const getOverFlow = el => el.style.overflow
+  const getPaddingAttr = el => Manipulator.getDataAttribute(el, 'padding-right')
+  const getMarginAttr = el => Manipulator.getDataAttribute(el, 'margin-right')
+  const getOverFlowAttr = el => Manipulator.getDataAttribute(el, 'overflow')
+  const windowCalculations = () => {
+    return {
+      htmlClient: document.documentElement.clientWidth,
+      htmlOffset: document.documentElement.offsetWidth,
+      docClient: document.body.clientWidth,
+      htmlBound: document.documentElement.getBoundingClientRect().width,
+      bodyBound: document.body.getBoundingClientRect().width,
+      window: window.innerWidth,
+      width: Math.abs(window.innerWidth - document.documentElement.clientWidth)
+    }
+  }
+
+  // iOS, Android devices and macOS browsers hide scrollbar by default and show it only while scrolling.
+  // So the tests for scrollbar would fail
+  const isScrollBarHidden = () => {
+    const calc = windowCalculations()
+    return calc.htmlClient === calc.htmlOffset && calc.htmlClient === calc.window
+  }
+
+  beforeAll(() => {
+    fixtureEl = getFixture()
+    // custom fixture to avoid extreme style values
+    fixtureEl.removeAttribute('style')
+  })
+
+  afterAll(() => {
+    fixtureEl.remove()
+  })
+
+  afterEach(() => {
+    clearFixture()
+    clearBodyAndDocument()
+  })
+
+  beforeEach(() => {
+    clearBodyAndDocument()
+  })
+
+  describe('isBodyOverflowing', () => {
+    it('should return true if body is overflowing', () => {
+      document.documentElement.style.overflowY = 'scroll'
+      document.body.style.overflowY = 'scroll'
+      fixtureEl.innerHTML = '<div style="height: 110vh; width: 100%"></div>'
+      const result = new ScrollBarHelper().isOverflowing()
+
+      if (isScrollBarHidden()) {
+        expect(result).toBeFalse()
+      } else {
+        expect(result).toBeTrue()
+      }
+    })
+
+    it('should return false if body is not overflowing', () => {
+      doc.style.overflowY = 'hidden'
+      document.body.style.overflowY = 'hidden'
+      fixtureEl.innerHTML = '<div style="height: 110vh; width: 100%"></div>'
+      const scrollBar = new ScrollBarHelper()
+      const result = scrollBar.isOverflowing()
+
+      expect(result).toBeFalse()
+    })
+  })
+
+  describe('getWidth', () => {
+    it('should return an integer greater than zero, if body is overflowing', () => {
+      doc.style.overflowY = 'scroll'
+      document.body.style.overflowY = 'scroll'
+      fixtureEl.innerHTML = '<div style="height: 110vh; width: 100%"></div>'
+      const result = new ScrollBarHelper().getWidth()
+
+      if (isScrollBarHidden()) {
+        expect(result).toEqual(0)
+      } else {
+        expect(result).toBeGreaterThan(1)
+      }
+    })
+
+    it('should return 0 if body is not overflowing', () => {
+      document.documentElement.style.overflowY = 'hidden'
+      document.body.style.overflowY = 'hidden'
+      fixtureEl.innerHTML = '<div style="height: 110vh; width: 100%"></div>'
+
+      const result = new ScrollBarHelper().getWidth()
+
+      expect(result).toEqual(0)
+    })
+  })
+
+  describe('hide - reset', () => {
+    it('should adjust the inline padding of fixed elements which are full-width', () => {
+      fixtureEl.innerHTML = [
+        '<div style="height: 110vh; width: 100%">',
+        '  <div class="fixed-top" id="fixed1" style="padding-right: 0px; width: 100vw"></div>',
+        '  <div class="fixed-top" id="fixed2" style="padding-right: 5px; width: 100vw"></div>',
+        '</div>'
+      ].join('')
+      doc.style.overflowY = 'scroll'
+
+      const fixedEl = fixtureEl.querySelector('#fixed1')
+      const fixedEl2 = fixtureEl.querySelector('#fixed2')
+      const originalPadding = getPaddingX(fixedEl)
+      const originalPadding2 = getPaddingX(fixedEl2)
+      const scrollBar = new ScrollBarHelper()
+      const expectedPadding = originalPadding + scrollBar.getWidth()
+      const expectedPadding2 = originalPadding2 + scrollBar.getWidth()
+
+      scrollBar.hide()
+
+      let currentPadding = getPaddingX(fixedEl)
+      let currentPadding2 = getPaddingX(fixedEl2)
+      expect(getPaddingAttr(fixedEl)).toEqual(`${originalPadding}px`)
+      expect(getPaddingAttr(fixedEl2)).toEqual(`${originalPadding2}px`)
+      expect(currentPadding).toEqual(expectedPadding)
+      expect(currentPadding2).toEqual(expectedPadding2)
+
+      scrollBar.reset()
+      currentPadding = getPaddingX(fixedEl)
+      currentPadding2 = getPaddingX(fixedEl2)
+      expect(getPaddingAttr(fixedEl)).toBeNull()
+      expect(getPaddingAttr(fixedEl2)).toBeNull()
+      expect(currentPadding).toEqual(originalPadding)
+      expect(currentPadding2).toEqual(originalPadding2)
+    })
+
+    it('should remove padding & margin if not existed before adjustment', () => {
+      fixtureEl.innerHTML = [
+        '<div style="height: 110vh; width: 100%">',
+        '  <div class="fixed" id="fixed" style="width: 100vw;"></div>',
+        '  <div class="sticky-top" id="sticky" style=" width: 100vw;"></div>',
+        '</div>'
+      ].join('')
+      doc.style.overflowY = 'scroll'
+
+      const fixedEl = fixtureEl.querySelector('#fixed')
+      const stickyEl = fixtureEl.querySelector('#sticky')
+      const scrollBar = new ScrollBarHelper()
+
+      scrollBar.hide()
+      scrollBar.reset()
+
+      expect(fixedEl.getAttribute('style').includes('padding-right')).toBeFalse()
+      expect(stickyEl.getAttribute('style').includes('margin-right')).toBeFalse()
+    })
+
+    it('should adjust the inline margin and padding of sticky elements', () => {
+      fixtureEl.innerHTML = [
+        '<div style="height: 110vh">',
+        '  <div class="sticky-top" style="margin-right: 10px; padding-right: 20px; width: 100vw; height: 10px"></div>',
+        '</div>'
+      ].join('')
+      doc.style.overflowY = 'scroll'
+
+      const stickyTopEl = fixtureEl.querySelector('.sticky-top')
+      const originalMargin = getMarginX(stickyTopEl)
+      const originalPadding = getPaddingX(stickyTopEl)
+      const scrollBar = new ScrollBarHelper()
+      const expectedMargin = originalMargin - scrollBar.getWidth()
+      const expectedPadding = originalPadding + scrollBar.getWidth()
+      scrollBar.hide()
+
+      expect(getMarginAttr(stickyTopEl)).toEqual(`${originalMargin}px`)
+      expect(getMarginX(stickyTopEl)).toEqual(expectedMargin)
+      expect(getPaddingAttr(stickyTopEl)).toEqual(`${originalPadding}px`)
+      expect(getPaddingX(stickyTopEl)).toEqual(expectedPadding)
+
+      scrollBar.reset()
+      expect(getMarginAttr(stickyTopEl)).toBeNull()
+      expect(getMarginX(stickyTopEl)).toEqual(originalMargin)
+      expect(getPaddingAttr(stickyTopEl)).toBeNull()
+      expect(getPaddingX(stickyTopEl)).toEqual(originalPadding)
+    })
+
+    it('should not adjust the inline margin and padding of sticky and fixed elements when element do not have full width', () => {
+      fixtureEl.innerHTML = '<div class="sticky-top" style="margin-right: 0px; padding-right: 0px; width: 50vw"></div>'
+
+      const stickyTopEl = fixtureEl.querySelector('.sticky-top')
+      const originalMargin = getMarginX(stickyTopEl)
+      const originalPadding = getPaddingX(stickyTopEl)
+
+      const scrollBar = new ScrollBarHelper()
+      scrollBar.hide()
+
+      const currentMargin = getMarginX(stickyTopEl)
+      const currentPadding = getPaddingX(stickyTopEl)
+
+      expect(currentMargin).toEqual(originalMargin)
+      expect(currentPadding).toEqual(originalPadding)
+
+      scrollBar.reset()
+    })
+
+    it('should not put data-attribute if element doesn\'t have the proper style property, should just remove style property if element didn\'t had one', () => {
+      fixtureEl.innerHTML = [
+        '<div style="height: 110vh; width: 100%">',
+        '  <div class="sticky-top" id="sticky" style="width: 100vw"></div>',
+        '</div>'
+      ].join('')
+
+      document.body.style.overflowY = 'scroll'
+      const scrollBar = new ScrollBarHelper()
+
+      const hasPaddingAttr = el => el.hasAttribute('data-bs-padding-right')
+      const hasMarginAttr = el => el.hasAttribute('data-bs-margin-right')
+      const stickyEl = fixtureEl.querySelector('#sticky')
+      const originalPadding = getPaddingX(stickyEl)
+      const originalMargin = getMarginX(stickyEl)
+      const scrollBarWidth = scrollBar.getWidth()
+
+      scrollBar.hide()
+
+      expect(getPaddingX(stickyEl)).toEqual(scrollBarWidth + originalPadding)
+      const expectedMargin = scrollBarWidth + originalMargin
+      expect(getMarginX(stickyEl)).toEqual(expectedMargin === 0 ? expectedMargin : -expectedMargin)
+      expect(hasMarginAttr(stickyEl)).toBeFalse() // We do not have to keep css margin
+      expect(hasPaddingAttr(stickyEl)).toBeFalse() // We do not have to keep css padding
+
+      scrollBar.reset()
+
+      expect(getPaddingX(stickyEl)).toEqual(originalPadding)
+      expect(getPaddingX(stickyEl)).toEqual(originalPadding)
+    })
+
+    describe('Body Handling', () => {
+      it('should ignore other inline styles when trying to restore body defaults ', () => {
+        document.body.style.color = 'red'
+
+        const scrollBar = new ScrollBarHelper()
+        const scrollBarWidth = scrollBar.getWidth()
+        scrollBar.hide()
+
+        expect(getPaddingX(document.body)).toEqual(scrollBarWidth)
+        expect(document.body.style.color).toEqual('red')
+
+        scrollBar.reset()
+      })
+
+      it('should hide scrollbar and reset it to its initial value', () => {
+        const styleSheetPadding = '7px'
+        fixtureEl.innerHTML = [
+          '<style>',
+          '  body {',
+          `    padding-right: ${styleSheetPadding}`,
+          '  }',
+          '</style>'
+        ].join('')
+
+        const el = document.body
+        const inlineStylePadding = '10px'
+        el.style.paddingRight = inlineStylePadding
+
+        const originalPadding = getPaddingX(el)
+        expect(originalPadding).toEqual(parseIntDecimal(inlineStylePadding)) // Respect only the inline style as it has prevails this of css
+        const originalOverFlow = 'auto'
+        el.style.overflow = originalOverFlow
+        const scrollBar = new ScrollBarHelper()
+        const scrollBarWidth = scrollBar.getWidth()
+
+        scrollBar.hide()
+
+        const currentPadding = getPaddingX(el)
+
+        expect(currentPadding).toEqual(scrollBarWidth + originalPadding)
+        expect(currentPadding).toEqual(scrollBarWidth + parseIntDecimal(inlineStylePadding))
+        expect(getPaddingAttr(el)).toEqual(inlineStylePadding)
+        expect(getOverFlow(el)).toEqual('hidden')
+        expect(getOverFlowAttr(el)).toEqual(originalOverFlow)
+
+        scrollBar.reset()
+
+        const currentPadding1 = getPaddingX(el)
+        expect(currentPadding1).toEqual(originalPadding)
+        expect(getPaddingAttr(el)).toBeNull()
+        expect(getOverFlow(el)).toEqual(originalOverFlow)
+        expect(getOverFlowAttr(el)).toBeNull()
+      })
+
+      it('should hide scrollbar and reset it to its initial value - respecting css rules', () => {
+        const styleSheetPadding = '7px'
+        fixtureEl.innerHTML = [
+          '<style>',
+          '  body {',
+          `    padding-right: ${styleSheetPadding}`,
+          '  }',
+          '</style>'
+        ].join('')
+        const el = document.body
+        const originalPadding = getPaddingX(el)
+        const originalOverFlow = 'scroll'
+        el.style.overflow = originalOverFlow
+        const scrollBar = new ScrollBarHelper()
+        const scrollBarWidth = scrollBar.getWidth()
+
+        scrollBar.hide()
+
+        const currentPadding = getPaddingX(el)
+
+        expect(currentPadding).toEqual(scrollBarWidth + originalPadding)
+        expect(currentPadding).toEqual(scrollBarWidth + parseIntDecimal(styleSheetPadding))
+        expect(getPaddingAttr(el)).toBeNull() // We do not have to keep css padding
+        expect(getOverFlow(el)).toEqual('hidden')
+        expect(getOverFlowAttr(el)).toEqual(originalOverFlow)
+
+        scrollBar.reset()
+
+        const currentPadding1 = getPaddingX(el)
+        expect(currentPadding1).toEqual(originalPadding)
+        expect(getPaddingAttr(el)).toBeNull()
+        expect(getOverFlow(el)).toEqual(originalOverFlow)
+        expect(getOverFlowAttr(el)).toBeNull()
+      })
+
+      it('should not adjust the inline body padding when it does not overflow', () => {
+        const originalPadding = getPaddingX(document.body)
+        const scrollBar = new ScrollBarHelper()
+
+        // Hide scrollbars to prevent the body overflowing
+        doc.style.overflowY = 'hidden'
+        doc.style.paddingRight = '0px'
+
+        scrollBar.hide()
+        const currentPadding = getPaddingX(document.body)
+
+        expect(currentPadding).toEqual(originalPadding)
+        scrollBar.reset()
+      })
+
+      it('should not adjust the inline body padding when it does not overflow, even on a scaled display', () => {
+        const originalPadding = getPaddingX(document.body)
+        const scrollBar = new ScrollBarHelper()
+        // Remove body margins as would be done by Bootstrap css
+        document.body.style.margin = '0'
+
+        // Hide scrollbars to prevent the body overflowing
+        doc.style.overflowY = 'hidden'
+
+        // Simulate a discrepancy between exact, i.e. floating point body width, and rounded body width
+        // as it can occur when zooming or scaling the display to something else than 100%
+        doc.style.paddingRight = '.48px'
+        scrollBar.hide()
+
+        const currentPadding = getPaddingX(document.body)
+
+        expect(currentPadding).toEqual(originalPadding)
+
+        scrollBar.reset()
+      })
+    })
+  })
+})