Hello, I try a lot, but I can't fix the problem with the menu on mobile phones. It disappears behind the content or there is nog menu at all. I see a lot of topics, but not with a sollution. See...

I am just finishing up a site using Themler for wordpress. When I view the site, (responsive) across all device sizes, the menu does not work on smart phones. When you click it, it simply does...

I, is posible to do this type of menu on themler billion 1? http://cdn3.wpbeginner.com/wp-content/uploads/2016/09/responsivemenudemo-1.gif

I need help removing the scroll bar under the mobile menu when you click on it. I have attached a picture