layout engines

• Trident 

Trident (layout engine)
Trident (also known as MSHTML) is the name of the layout engine for the Microsoft Windows version of Internet Explorer.
http://en.wikipedia.org/wiki/Trident_%28layout_engine%29

• WebKit

WebKit is layout engine software designed to allow web browsers to render web pages.
It powers the Apple Safari and Google Chrome browsers
Opera have announced that their browser will also move to use it
It is also used as the basis for the experimental browser included with the Amazon Kindle e-book reader, as well as the default browser in the Apple iOS, Android, BlackBerry 10, and Tizen mobile operating systems
http://en.wikipedia.org/wiki/WebKit

• Gecko 

Gecko (layout engine)
Gecko is a free and open source layout engine used in many applications developed by Mozilla Foundation and the Mozilla Corporation (notably the Firefox web browser), as well as in many other open source software projects
It is designed to support open Internet standards
http://en.wikipedia.org/wiki/Gecko_%28layout_engine%29

Cascading Style Sheets (CSS)

• Cascading Style Sheets (CSS)

Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation semantics (the look and formatting) of a document written in a markup language.
Its most common application is to style web pages written in HTML and XHTML, but the language can also be applied to any kind of XML document, including plain XML, SVG and XUL.
http://en.wikipedia.org/wiki/Cascading_Style_Sheets

• HTML is meant for Content (Model), CSS is meant for Style (View), JavaScript is meant for Interaction (Controller)

stackoverflow.com/questions/4937371/html-tab-interface-using-only-css