Hi guys, I need your help to figure out why a horizontal scroll bar extend to the right when firing a JavaScript function. In my responsive design of max-width 360px, there nothing wrong on the landing page. But when I clicking on a button to fire a JavaScript function the horizontal scroll bar extend to the right and there's a blank space on the right. I use right click and Inspect element but can't find that extended part. So how do I find it? Sorry for not providing the link, it's a user logged-in area. Thank you,