diff --git a/cms/djangoapps/contentstore/features/video.feature b/cms/djangoapps/contentstore/features/video.feature
index d6eb54aeed..009fce825a 100644
--- a/cms/djangoapps/contentstore/features/video.feature
+++ b/cms/djangoapps/contentstore/features/video.feature
@@ -86,4 +86,4 @@ Feature: CMS.Video Component
     And I set value "24" to the field "End Time"
     And I save changes
     And I click button "Play"
-    Then I see a range on slider with styles "left" set to 10 and "width" set to 10
+    Then I see a range on slider with styles "left" set to 70 px and "width" set to 70 px
diff --git a/cms/djangoapps/contentstore/features/video.py b/cms/djangoapps/contentstore/features/video.py
index 6809790b0f..0d1705d643 100644
--- a/cms/djangoapps/contentstore/features/video.py
+++ b/cms/djangoapps/contentstore/features/video.py
@@ -203,14 +203,14 @@ def click_button(_step, button_type):
     world.css_click(BUTTONS[button])
 
 
-@step('I see a range on slider with styles "left" set to (.+) and "width" set to (.+)$')
+@step('I see a range on slider with styles "left" set to (.+) px and "width" set to (.+) px$')
 def see_a_range_slider_with_proper_range(_step, left, width):
     left = int(left.strip())
     width = int(width.strip())
 
     world.wait_for_visible(".slider-range")
-    slider_range = world.css_find(".slider-range")[0]
+    slider_range = world.browser.driver.find_element_by_css_selector(".slider-range")
 
-    assert "left: {}%;".format(left) in slider_range.outer_html
-    assert "width: {}%;".format(width) in slider_range.outer_html
+    assert int(round(float(slider_range.value_of_css_property("left")[:-2]))) == left
+    assert int(round(float(slider_range.value_of_css_property("width")[:-2]))) == width