JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
                    <html xmlns="http://www.w3.org/1999/xhtml">
                    <head>
                    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
                    <title>Disable /Prevent Text Selection jQuery-JavaScript</title>
                    <script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script>
                    <script type="text/javascript">
                    // Begin:
                    // Jquery Function to Disable Text Selection
                    (function($){if($.browser.mozilla){$.fn.disableTextSelect=function(){return this.each(function(){$(this).css({"MozUserSelect":"none"})})};$.fn.enableTextSelect=function(){return this.each(function(){$(this).css({"MozUserSelect":""})})}}else{if($.browser.msie){$.fn.disableTextSelect=function(){return this.each(function(){$(this).bind("selectstart.disableTextSelect",function(){return false})})};$.fn.enableTextSelect=function(){return this.each(function(){$(this).unbind("selectstart.disableTextSelect")})}}else{$.fn.disableTextSelect=function(){return this.each(function(){$(this).bind("mousedown.disableTextSelect",function(){return false})})};$.fn.enableTextSelect=function(){return this.each(function(){$(this).unbind("mousedown.disableTextSelect")})}}}})(jQuery)
                    // EO Jquery Function
                    
                    // Usage
                    // Load Jquery min .js ignore if already done so
                    // $("element to disable text").disableTextSelect();
                    // $("element to Enable text").enableTextSelect();
                    //
                    
                    jQuery(function($) {
                    $("body").disableTextSelect();
                    
                    $("#code").mouseover(function(){
                     $("body").enableTextSelect();
                    });
                    
                    $("#code").mouseout(function(){  
   ...