Layout

First, include it on your page

Add this CSS file to your page:

                    
  <link rel="stylesheet" type="text/css" href="http://yui.yahooapis.com/3.9.0pr3/build/cssgrids-responsive/cssgrids-responsive-min.css">

Optionally, you can head over to the GridBuilder to make your very own custom grid. Save the outputted CSS in a file.

How does it work?

YUI3 Responsive Grids builds on top of the existing YUI3 Grids implementation. It adds a single new class name called .yui3-g-r (the "r" stands for responsive, you see). You can use this instead of using .yui3-g as you normally do. All elements with a class name of .yui3-g-*-* will automatically become responsive if they are direct descendents of a .yui3-g-r.

The HTML

The first gist shows how regular YUI3 grids are written. These grids are unresponsive. They'll always be one-thirds irrespective of the width of the screen. The second gist replaces the .yui3-g with .yui3-g-r, thereby making the one-third columns collapse to full width on lower screen widths.

Features.

Adds configurable media queries for different screen widths (Desktops, Landscape Tablets, Portrait Tablets, Phones)
Collapses elements to 100% if smaller than a certain width (767px by default)
Adjusts images to fit on smaller screens
Works with as many columns as you want (or as few)
Configure prefixes (as we've done on this page)

Demo

Resize the page to see the grid collapse.

Fast

YUI's lightweight core and modular architecture make it scalable, fast, and robust. Built by frontend engineers at Yahoo!, YUI powers the most popular websites in the world.

Complete

YUI's intuitive and well-documented API takes you from basic DOM handling to building performant and maintainable applications on desktop browsers, mobile devices, and servers.

Industrial Strength

A thriving community, a carefully architected infrastructure, and a comprehensive suite of tools help you code like a pro, from simple web pages to complex web applications.

Free and Open

YUI is free for all uses and is developed in the open on GitHub. Core team members can always be found in the forums and the #yui IRC channel on Freenode. Pull requests welcome!

Two-Fifth Column

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur fermentum dui turpis. Duis nulla dolor, suscipit in venenatis vitae, auctor eu nibh. Proin lobortis arcu nec tellus vehicula vitae pellentesque nisi molestie. Aenean felis ligula, hendrerit id dictum sed, ornare nec leo. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Donec non lectus et quam porttitor dignissim vitae ac odio. Aenean mattis dui porta lacus egestas ultricies. Mauris vel dolor libero, sit amet rhoncus nibh.

Three-Fifth Column

Quisque ac magna eget est porta varius ut eget quam. Curabitur tincidunt gravida nisl, vitae luctus velit vulputate vel. Aliquam sed sodales orci. Proin varius placerat magna tristique tincidunt. Morbi non dignissim felis. Proin bibendum libero nec felis eleifend porttitor. Morbi auctor venenatis justo, molestie luctus mi pulvinar nec. Pellentesque vitae ornare lacus. Nulla hendrerit tempor auctor. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Duis luctus facilisis cursus. Integer in lacinia dui. Phasellus ullamcorper, sem at congue pretium, velit sapien ornare mi, eu eleifend risus sapien ac eros.

Fusce accumsan, sem vitae tempus tempor, nulla lectus interdum felis, eget molestie urna mauris vel elit. Curabitur vel ipsum nulla. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Nam viverra, augue et sollicitudin dignissim, lectus tellus imperdiet lectus, a tempor ipsum mauris vitae augue. Nullam vel nulla a purus cursus consequat. Nulla orci elit, malesuada nec egestas non, ornare quis nibh. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas.