How to make Page Header Image Full Width

Hi, I am struggling with the image headers that are on various pages of my website.
They used to be full width and I am not sure how it got changed and am unsure of how to fix it. If you look at the website (https://www.villapetrus.com/the-villa/facilities/) you’ll see that the image starts a quarter way through the width of the screen. I have checked with other devices and it seems to be only an issue with desktop visualisation. Could someone please advise ?
Thanks in advance
Martine