Variable Grid System – Generate CSS grid templates based on ‘960 Grid System’

“The variable grid system is a quick way to generate an underlying CSS grid for your site. The CSS generated file is based on the 960 Grid System.”

What’s the Deal With Display: Inline-Block?

“We’ve been using floats for layout pretty much since we left tables behind. It’s a quirky solution that can often cause troubles, but if you know what you’re doing, it works. One interesting alternative to floats that people are turning to more and more lately is to set the display value of an element to ...

CSS tests and experiments

http://www.brunildo.org/test/index.html

Best practices for modern web development

Learn How to Develop the Next Generation of Applications for the Web => https://github.com/google/WebFundamentals

CSS contents and browser compatibility

http://www.quirksmode.org/css/contents.html

Initializr – With Great Templates Comes Great Responsivity!

http://verekia.com/initializr/responsive-template

CSS Image Replacement Museum

http://css-tricks.com/examples/ImageReplacement/

CSS Media Queries & Using Available Space

http://css-tricks.com/css-media-queries/

Mozilla Developer Network

https://developer.mozilla.org/en-US/docs

Sections and Outlines of an HTML5 Document

“The HTML5 specification brings several new elements to web developers allowing them to describe the structure of a web document with standard semantics. This document describes these elements and how to use them to define the desired outline for any document.”