how i can make the banner fixed with the page? 1.7

[eliaaas1987]

Hello everyone...

 

i need to make the banner in my prestashop platform fixed with the page, i really thied to do that, but it couldn't work with me, the ????.js not work in my page, i tried to make that example in my page: http://yaireo.github.io/stickyfloat/
and this example: https://www.web-ia.com/exemples/sticky/sticky-rightcolumn.html , with this module: https://mypresta.eu/modules/front-office-features/html-box.html , but thing work...

would you please someone tell me how to do it :(, i will appreciate that

thanks