Page without sidebar

Dear ThemeEverest,

Thank you for this theme, it is nearly perfect for our travel blog!
The only thing we wanted to do, is display a map that has the same width as the website / header image. When we now display a page, it is restricted in width due to the sidebar. Is it possible to remove the sidebar for one page and keep it on all the other pages one way or another?

Screenshot of what we mean:
https://i.imgsafe.org/90/90c34ce3ad.png

Thanks in advance!