How to change hamburger menu icon to custom image?

Is it possible to change the mobile hamburger menu icon to an image of my own?
I’m trying to do it in the custom tool css settings. I am using the bb themer.

Hi Tom,

When you say BB Themer do you mean the BB theme or Beaver Themer to create your header and therefore, are using the Menu module?

Both methods would require custom CSS. If you let me which method you’re using I can provide the CSS to add your own image.

Thanks for your help! Yeah I am using the Beaver Themer to create my header. If you could provide the CSS that would be great!