Solution: Instead of implementing ideal responsive image with  element, we can use a server-side solution with Adaptive image i.e. http://adaptive-images.com/. It was created by Matt Wilcox (http://mattwilcox.net/).

Solution: If we use the framework it can save a lot of time. Framework generally includes a width of the grid, button styles, CSS reset and many more other aspects to build a website.

Solution: Skeleton is a minimal responsive framework. It is 960 pixels wide with 12 columns in its basic grid. The grid is responsive by integrating CSS3 media queries. It is also called the 960.gs framework. It is a good place for starting with the Grid System.

Solution: Bootstrap was built by Mark Otto and for internal use in Twitter. It was launched as a free software for the public. Bootstrap is packed with styled user interface components such as button navigation, forms, custom jQuery plugins like popover, model box and carousal.

Solution: We need several tools to build our website. To build a responsive website we need web browsers, responsive bookmarklets, code editors for responsive design testing.

Solution: Code editor is equipment for developing a website. There are many editors available in Windows, Linux and OS X. Linux has Geany, Gedit, BlueFish. Windows have WebMatrix, TextPad, Notepad++. OS X has MacVim, Brackets, TextWrangler.

Solution: Bookmarklet is a sort of emulator tool for testing responsive design. It resizes the dimension of viewable area in the browser. There are various bookmarklets available like Screenqueri.es, Resizer, Adobe Edge Inspect, Screen Fly, RWD demonstration, ResponsivePX, Responsinator.

Solution: CSS capabilities can be extended by CSS preprocessors. By using it we can compose CSS in more dynamic ways. They allow us to use variables and functions in programming languages like JavaScript, PHP. There are several CSS preprocessors available such as LESS, Stylus, Sass.

Solution: These are some CSS preprocessors that have been adopted in responsive frameworks. Bootstrap utilizes LESS as its style foundation. Foundation uses Sass in styling.

Solution: LESS and Sass are written in a language that browsers do not recognize. So there are compilers available to compile CSS preprocessors. Some of them are Less.js, WinLESS, LESS.app, Simpless, ScoutApp, ChrunchApp, Terminal or Command Prompt, Codekit, CompassApp.