Possible to remove text ‘onetone’ from URL of gallery images?

Open site

1)
Click on a portfolio pic.
You get https://www.alfasteel.pt/#onetone-portfolio-image section_image_3_0/0/

Is there a way to remove ‘onetone’ text and still have the functionality working?
—————————————————————————————
2)
Is there a way to click another menu link and have this text of the link disappear
‘#onetone-portfolio-image section_image_3_0/0/’ ?

It only disappears when you click the logo.
It doesn’t look professional when you click another menu link and you still have the text showing.
—————————————————————————————

The page I need help with: [log in to see the link]