Plugins: Mobile & Responsive Page Output

Automatically Add Mobile Hamburger Menu

Responsive Menu – Create Mobile-Friendly Menu

Adds a lightweight mobile menu to your site, if the width is lower than a certain (configurable) value Mobilize

Toast Mobile Menu – PageSpeed Insights Friendly

How to create a responsive sidebar menu using CSS i How to create a responsive hamburger menu using CSS

JoryHogeveen/off-canvas-sidebars: This plugin will add various options to implement off-canvas sidebars in your WordPress theme based on the Slidebars jQuery plugin. koristi Slidebars jQuery plugin pa ga zaboravi.