Hello, on the website www.tuttoperleaziende.it/arpitel_new I installed the Investa template. I changed the header color to white to show the logo. The problem is that with the mobile device the link to the off-canvas menu is not visible (see the screenshot https://imgur.com/a/C6TXWVt). How can I change the color of the link to the offcancas menu?

Thanks Pio