Scrollbar in side menu

[zealucard]

Hello,
When I dicrease the browser height, or just with a large menu, I don't have any vertical scrollbar showing.
How can I do that ?

[zealucard]

Ok, my mistake !
I searched in the wrong way. I just add into the CSS file :

html, body { -webkit-scrollbar { width: 0px; background: transparent; } }

and

paper-listbox { height: 100%; overflow-y: auto; }

Now it's working as expected, even on mobile phone.