The error : The #quote-box wrapper element should be horizontally centered. Please run tests with browser’s zoom level at 100% and page maximized.
Seems centred to me
Have tried everything I could
https://codepen.io/div002/pen/MWZbJbe
The element you put the #quote-box id on is a full-width element.
If you move the id to the .quote-box element it will pass the layout test. But you then have to move the button and link inside that element as well.