Hamburger menu for all media

Hi,
please could someone tell me how to set the mobile menu the standard one for all screen sizes?

I'd like to get rid of left and right mainmenu and have only one hamburger menu on the right side of the template.

Please add this code to override.css and make sure override is enabled in template settings.

#gkMobileMenu {
    display: block !important;
    float: right;
}