Move mobile menu icon up

If you right click on the element in the browser you can inspect the code and see the CSS that is controlling that element http://prntscr.com/m06t6g

Add this to the custom CSS panel of the theme customizer, (if it has one)

.menu-toggle {
    top: -11px;
}

In the future, for theme related support, your theme’s support page is here: https://ww.wp.xz.cn/support/theme/primer