If you are using Raven Navigation Menu for your website, you can set a breakpoint for it to switch to mobile menu.
By default it is set to Mobile screen sizes, but you can change it to Tablet or Desktop screen sizes.
To change the breakpoint for Navigation Menu
1. Follow the steps in this article to add a Raven Navigation Menu to your page.
2. A new dashboard on the left will open with the element’s settings.
3. Go to Content Tab > Settings.
4. Under Mobile > Breakpoint.
5. Set from which devices your menu becomes a burger menu.