Image in lead area not resized on responsive display

hi,
I do not understand why the image of iphone in header is displayed by this …

look at the link:https://181.224.144.40/~nkdesign/agenzia-grafica/?lang=it

how can I fix it?

• This topic was modified 9 years by  nkdesign.
• This topic was modified 9 years by  IshYoBoy.