JSFiddle - React, Tailwind, and code Playground

HTML

Press (?) for help
<div id="keyboard-shortcut-menu">you're screwed</div>

CSS

#keyboard-shortcut-menu { display: none; }

JavaScript

$(document).keyup(function(e){

    if (e.which == 191 && e.shiftKey == true) {
        $('#keyboard-shortcut-menu').toggle();
    }

});