The mobile menu of DIVI is a wonderful thing, but in best case the regular menu stays visible as long as possible, meaning that only in smaller resolutions, where the text would collide with the logo or get into two lines, we really need to reduce to the mobile version. Since every menu has a different width according to its entries, we can optimize the responsiveness by moving its breakpoint to the point it starts to collide or break. We can find out this point easiest with the developer tool of Chrome, which tells us the browser width whenever we shrink the browser window. Just use the following lines in your child-theme or custom CSS area of DIVI theme options and replace the 981px with your optimal breakpoint: