When i click on the portfolio link, it will create an iframe lightbox content. I have noticed and inspected the element and apparently the iframe width is not following the css styles, the iframe width was overflow out from div. Below is my test link.
https://wind-dance.com/geopancar/portfolios/
I seriously have no idea why iphone is so different with other devices as those are working fine.
Appreciated everyone helps here.
[EDIT 1] I tried using simulator to check iPhone issue. Here is the screenshot. Notice the width and height size is wider than the device size. I am using Android phone and everything is looking fine.
[SOLUTION]
I have found a solution here. Apparently its a css issue on iframe rendering.