iOS / iPhone issue with background image


i have just installed a website and my daughter, which uses a new iPhone 12 pro dont get the scrolling effect (parallax ?) of the content over the background image.

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Thank you for your help.


i am not sure why no one is answering this topic. Did i maybe was not clear with the description of the problem ?

When you open with an iPhone, the content is not scrolling correctly over the background image, the background image is somekind of fixed and does not produce the hovering effect as it should be.

Please help me with that issue.

All the best.