As the web landscape becomes increasingly complex, it's becoming extremely important to deliver solid web experiences to a growing number of contexts. Thankfully, responsive web design gives web creators some tools for making layouts that respond to any screen size. We'll use fluid grids, flexible images and media queries to get the layout looking great regardless of the size of the device's screen dimensions.
However, mobile context is much more than just screen size. Our mobile devices are with us wherever we go, unlocking entire new use cases. Because we constantly have our mobile devices with us, connectivity can be all over the board, ranging from strong wi-fi signals on the couch to 3G or EDGE when out and about. In addition, touch screens open new opportunities to interact directly with content and mobile ergonomics lead to different considerations when designing layout and functionality.
In order to create a site that's truly designed for mobile context and not just for small screens, we want to ensure that we tackle the many challenges of mobile development upfront. The constraints of the mobile context force us to focus on what content is essential and how to present that content as quickly as possible. Building fast-loading, optimized experiences mobile first has a trickle down (or up, depending on how you look at it) effect for tablet, desktop and other emerging contexts.

We’re a group of developers working towards a markup-based means of delivering alternate image sources based on device capabilities to prevent wasted bandwidth and optimize display for both screen and print.

We've put together this set of super awesome email templates so that you can make your email campaigns responsive!
Responsive, you say?
Yep. With more and more people pulling out their phones to check their email, we knew there had to be an easier way to ensure campaigns looked good on any device. That's why we recently made all our email campaigns responsive. Which had a lot of folks asking if we could do the same for them. And so we did.

Je ne suis pas un gros fan de responsive design. Ce qui me dérange, ce n'est pas vraiment le fait d'adapter des mises en page à la taille de son navigateur. Ce n'est pas vraiment nouveau, et on a même retrouvé un exemple datant de 1999. La vraie nouveauté, c'est la possibilité d'utiliser des fonctionnalités natives de CSS pour parvenir à ce résultat. Mais ce qui me dérange, c'est que la technologie actuelle ne nous permet pas de proprement résoudre ce problème.
Au début du mois, Apple a sorti l'iPad mini. C'est une belle machine, aux caractéristiques très proches de l'iPad 2. Et ça c'est embêtant pour nous, pauvres intégrateurs, car l'iPad mini et l'iPad 2 ont la même résolution d'écran, mais pour une taille d'écran bien différente (respectivement 7,9" et 9,7"). Avec si peu de différence, Apple a fait en sorte que toutes les applications sur iPad mini fonctionnent comme sur iPad 2. Et c'est donc valable pour Safari, où il est presque mission impossible de détecter l'iPad mini, même via user agent ou device-pixel-ratio.

A jQuery plugin that helps you serve different content to different devices.
Responsive Content is used to load content that is appropriate to the current device's screen size. It is typically used alongside Responsive Design techniques. Note however that Responsive Design and Responsive Content act on different levels: given a particular screen width, the former applies a particular styling to the same content - whereas the latter actually loads different content. It can be used subtly - for example to cause smaller images to be loaded on smaller devices - or to deliver radically different content to different screen widths or device capabilities.

I’ve been wanting to attempt a port of Erik Loyer’s slabtype algorithm for quite some time now and seeing Paravel’s fittext jQuery plugin, in combination with a gloriously hassle-free lunch hour gave me the impetus to attempt it. This is the result – resize the browser viewport to see the effect in action.

Gamma Gallery is an experimental responsive image gallery that attempts to provide an adjustable responsive images approach taking its grid layout and the full slideshow view into account.

I'm sure you all are using viewport meta tag for responsive design, but did you know that the viewport tag can also be very useful for non-responsive design? If you haven't got the time to convert your design to responsive yet, you should read this article on how to use viewport tag to improve the appearance of your design on mobile devices.

34Grid is a Responsive Grid System based on "equally distributed columns" layout basis. In contrast to other great grid systems (@see bottom of page), 34Grid provides equally distributed columns for each row. (and also column complements for inequal distributions)
If you're already familiar with grid systems and responsive web design just create&download a bundle and see what is inside. Else you may start with resizing your browser window.

As responsive design rapidly increases in popularity, we felt we would take a look at some of the varied solutions and techniques that are being adopted for managing the navigation/menu on smaller screened devices.
Planning and building your menu for mobiles will perhaps be the trickiest aspect of your responsive layout, not just with the coding but also having to decide what will stay and what will have to go to fit everything into the smaller screen. It is a juggling act between both readability and the desire to show as much on the screen as possible.
Hopefully the solutions we have for you below will help get you on your way.