Hi there, I'm working on this site: https://talosdrones.com/product/dji-agras-t16-sprayer-ag-drone/ I would like a nav bar to function and scroll through the single page like this site: http://asiercarazo.com/ I can't figure out if it's different pages, sub pages, or the same page and if it's the same page how do I get the menubar to function like that. Thank you for any tips!