IMAGE RESIZE ERROR IN PRODUCT / TOUR

In the product sheet if I insert images correctly they are inserted in full screen mode. Why?

https://www.seadwellerboat.com/boat-tours/demo-tour/

This is the code:

Soft drink a bordo

Panino caprese (pomodoro e mozzarella) da consumare a bordo

Assaggio di Limoncello

Maschera e boccaglio (a richiesta)

Tempo libero per visitare Capri