Fix the toolbar icons and the hamburger icon is overlapping with the sidebar in smaller viewports

[Tishasoumya-02]

[Manas-Kenge]

Am I supposed to write custom css for this or is there a volto class for this

[Tishasoumya-02]

I think toolbar icons should get css from volto , but for the hamburger you need to write custom css

[Manas-Kenge]

I think the only fix needed is for the buttons (except links) in the toolbar, as for the hamburger menu it will be fixed if we fix the behavior of sidebar overlay. I looked at the 'edit' page to see the similar behavior