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12 Little-Known CSS Facts. CSS is not an overly complex language.

12 Little-Known CSS Facts

But even if you’ve been writing CSS for many years, you probably still come across new things — properties you’ve never used, values you’ve never considered, or specification details you never knew about. In my research, I come across new little tidbits all the time, so I thought I’d share some of them in this post. Admittedly, not everything in this post will have a ton of immediate practical value, but maybe you can mentally file some of these away for later use. 1.

The color Property Isn’t Just for Text Let’s start with the easier stuff. Take a look at the demo below: Notice in the CSS, only one color property is used, on the body element, setting it to yellow. The alt text displayed on a missing imageThe border on the list elementThe bullet (or marker) on the unordered listThe number marker on the ordered listThe hr element All of this is verified by the spec: This property describes the foreground color of an element’s text content. 2. 3. 4. 5. Client-side full-text search in CSS. Using data- attributes for indexation, and a dynamic stylesheet with a CSS3 selector for search, it is straightforward to implement a client-side full-text search in CSS rather than JavaScript.

Client-side full-text search in CSS

Here is an example. The Searchable List The Search Code The search is very straightforward: it relies on two well-supported CSS3 selectors (:not() and [attr*=]) and the rewriting of a style rule each time the search input is modified: The advantage of using CSS selectors rather than JavaScript indexOf() for search is speed: you only change one element at each keystroke (the <style> tag) instead of changing all the elements matching the query. Demo. Single-direction margin declarations. 12 June, 2012 This morning I awoke to find Smashing Magazine had retweeted a tweet I made two months ago about how you should always try and apply margins in one direction only.

Single-direction margin declarations

This, like most rules in web development, is a very general (and breakable) rule. It’s even a rule you can opt not to follow at all, but after receiving a slew of Tweets asking why, I thought I’d write up why it’s a rule I live by, and one I’d recommend to anyone… I’m not sure how I arrived at this rule, but I’m really glad I did and I would likely never ever change it. The basic premise is that you should try and define all your margins in one direction. The benefits are, as I see them: Defining vertical rhythm This next bit on its own is enough to convince me, this one tip is one of the most valuable ones I have, personally. Whenever I start a new project I typically want to know two things; my base font-size and my base line-height. That 1.5 is my Magic Number.

Bosh. Confidence in portability Less to think about. A Harder-Working Class. Class is only becoming more important. Focusing on its original definition as an attribute for grouping (or classifying) as well as linking HTML to CSS, recent front-end development practices are emphasizing class as a vessel for structured, modularized style packages. These patterns reduce the need for repetitive declarations that can seriously bloat file sizes, and instil human-readable understanding of how the interface, layout, and aesthetics are constructed. In the next handful of paragraphs, we will look at how these emerging practices – such as object-oriented CSS and SMACSS – are pushing the relevance of class.


CSS Ribbon Menu. Use CSS3 transitions and CSS2 pseudo-elements to create an animated navigation ribbon with minimal markup.

CSS Ribbon Menu

February 1, 2012 Browser Support IE8 and IE9 do not support CSS3 transitions, so the hover state will not be animated for those browsers. Otherwise it looks and functions the same, which I think is a very acceptable fallback. Powerful New CSS- and JavaScript-Techniques (2012 Edition) Advertisement Since our last round-up of useful CSS techniques1, we’ve seen a lot of truly remarkable CSS geekery out there.

Powerful New CSS- and JavaScript-Techniques (2012 Edition)

With CSS3, some of the older techniques now have become obsolete, others have established themselves as standards, and many techniques are still in the “crazy experimentation” stage. Simpler CSS typing animation, with the ch unit. A while ago, I posted about how to use steps() as an easing function to create a typing animation that degrades gracefully.

Simpler CSS typing animation, with the ch unit

Today I decided to simplify it a bit and make it more flexible, at the cost of browser support. The new version fully works in Firefox 1+ and IE10, since Opera and WebKit don’t support the ch unit and even though IE9 supports it, it doesn’t support CSS animations. To put it simply, one ch unit is equivalent to the width of the zero (0) character of the font. How to adjust an iframe element’s height to fit its content. In an ideal world there would always be a clean way of displaying data supplied by a third party on your site.

How to adjust an iframe element’s height to fit its content

Two examples would be getting the data in JSON or XML format from a Web Service and having an API to code against. But you don’t always have any of those options. CSS Lifted corner Drop Shadow. Create an adaptable website layout with CSS3 media queries. Getting started Creating the default layout The first step of this tutorial is obviously to create a HTML page.

Create an adaptable website layout with CSS3 media queries

I chose to make a simple HTML5 page with only a header image, a title, and some text. Make a Footer Stick to the Bottom of the Page. This CSS footer stylesheet will make a footer stick to the bottom of the page.

Make a Footer Stick to the Bottom of the Page

CSS Sticky Footer This CSS sticky footer code pushes a website's footer to the bottom of a browser window. It is valid CSS and HTML with no unsavory hacks, so it works in all of the major browsers (even the now defunct IE5 and IE6). View the example CSS Sticky Footer or the HTML5 Sticky Footer. CSS Lint. Galen Gidman. Just over a week ago I announced my CSS3 sticky note experiment and the response was amazing. A huge thanks to everyone that shared them! Today I have a new project to share — CSS progress bars. One of my big goals was to use as little markup as possible — my target was just one element. Although it took some creativity, I was able to pull it off by making extensive use of CSS’s :before and :after psuedo selectors.

I started off with a <div> with a class of progress-bar as my base. 30 Exceptional CSS Navigation Techniques. We’ve seen innovative ways in which designers and developers have used CSS to innovate upon its shortcomings.

30 Exceptional CSS Navigation Techniques

Here, you’ll find some of the best ways to use CSS for your website navigation. You’ll find a variety of techniques that truly showcase the capabilities of CSS. In this article, you will find a collection of excellent navigation techniques that use the CSS to provide users with an impressive interface. 1. The Menu menu. The 30 CSS Selectors you Must Memorize. Rolling a coke can around with pure CSS. Wednesday, January 27th, 2010 <p>Román Cortés is having a lot of fun with CSS tricks these days. He just built an example rolling CSS coke can that uses background-attachment, background-position, and a few other tricks to get the effect.

No fancy CSS3 needed here! The key pieces used: It helps to see the can and the wrapper that is placed around it.