Scroll to the "About us" section.

Hi, I need have an scrool effect when I push the botton. When I push the botton “What′s inside?” in the section “big title” I need the scrool effect to the section “About us” for example. I think that the botton “What′s inside?” is the green button in the file big_title.php.
I found in the file big_title.php this lines:
$zerif_bigtitle_greenbutton_label = get_theme_mod(‘zerif_bigtitle_greenbutton_label’,__(“What’s inside”,’responsiveboat’));

$zerif_bigtitle_greenbutton_url = get_theme_mod(‘zerif_bigtitle_greenbutton_url’,esc_url( home_url( ‘/’ ) ).’#focus’);

The url ‘/’ goes to the section “Features”.
What is the url of the section “About us”?
Thanks