SideBar not stopping

Hello, I have a sidebar on my site and it should stop when the foooter beggin but it doesn’t stop.
And on this https://alltak.com.br/produtos/adesivo-automotivo-envelopamento/vinil-linha-ultra-brilho page it’s not sticking

• This topic was modified 6 years, 4 months ago by vanessaaa.

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