Facebook Pixel

   The Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising by understanding the actions people take on your website.

Google Analytics

   Google Analytics is a web analytics service offered by Google that tracks and reports website traffic, currently as a platform inside the Google Marketing Platform brand.

gsap 1.20.3

   Think of GSAP as the Swiss Army Knife of animation...but better. It animates anything JavaScript can touch (CSS properties, canvas library objects, SVG, generic objects, whatever) and it solves lots of browser inconsistencies, all with blazing speed (up to 20x faster than jQuery). See http://greensock.com/why-gsap/ for details. Other libraries like jQuery, Velocity, Transit, and Zepto only tween CSS properties. Plus, their sequencing abilities and runtime controls pale by comparison. Simply put, GSAP is the most flexible high-performance animation library on the planet. And unlike monolithic frameworks like Famo.us or Angular that dictate how you structure your apps, GSAP simply owns the animation layer; sprinkle it wherever you want. GSAP stands for the GreenSock Animation Platform. There`s a jQuery plugin that hijacks the native jQuery.animate() method so that animations perform much better and additional properties can be tweened, like colors, transforms (2D and 3D), boxShadow, borderRadius, clip, and lots more. GSAP has no dependencies on jQuery or other libraries. See http://greensock.com/gsap/ for details.

jquery-cookie 1.4.1

   A simple, lightweight jQuery plugin for reading, writing and deleting cookies.

Cdnjs

   cdnjs is a CDN host for opensource libraries

Meta Description

   A meta description is a 160-character snippet, a meta tag in HTML, that summarizes a page`s content. this website is having meta description of the following : RAIL NATION: Das Eisenbahn-Spiel mit dem du dein Eisenbahn-Imperium zum Erfolg führst. Kostenlos ✔ 3,5 Millionen aktive Spieler ✔ Jetzt spielen ✔

Vary Header Accept-Encoding

   The Accept-Encoding request HTTP header advertises which content encoding, usually a compression algorithm, the client is able to understand. Using content negotiation, the server selects one of the proposals, uses it and informs the client of its choice with the Content-Encoding response header.

Nginx

   Nginx is a web server which can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. The software was created by Igor Sysoev and first publicly released in 2004. A company of the same name was founded in 2011 to provide support and Nginx plus paid software.

Viewport - initial-scale

   The viewport is the user`s visible area of a web page. The viewport varies with the device, and will be smaller on a mobile phone than on a computer screen. Before tablets and mobile phones, web pages were designed only for computer screens, and it was common for web pages to have a static design and a fixed size.

Viewport - Width

   The viewport is the user`s visible area of a web page. The viewport varies with the device, and will be smaller on a mobile phone than on a computer screen. Before tablets and mobile phones, web pages were designed only for computer screens, and it was common for web pages to have a static design and a fixed size.

Viewport - Mobile compatible

   The viewport is the user`s visible area of a web page. The viewport varies with the device, and will be smaller on a mobile phone than on a computer screen. Before tablets and mobile phones, web pages were designed only for computer screens, and it was common for web pages to have a static design and a fixed size.

Chunked transfer encoding

   Chunked transfer encoding is a streaming data transfer mechanism available in version 1.1 of the Hypertext Transfer Protocol (HTTP). In chunked transfer encoding, the data stream is divided into a series of non-overlapping "chunks"