Alsacréations : Actualités et tutoriels HTML, HTML5, CSS, CSS3, standards du web How nth-child Works There is a CSS selector, really a pseudo-selector, called nth-child. Here is an example of using it: What the above CSS does, is select every third list item inside unordered lists. That is, the 3rd, 6th, 9th, 12th, etc. But how does that work? And what other kinds of things can you do with nth-child? It boils down to what is in between those parentheses. nth-child accepts two keywords in that spot: even and odd. As seen in the first example, nth-child also accepts expressions in between those parentheses. Let's get back to the "3n+3" from the original example though. (3 x 0) + 3 = 3 = 3rd Element (3 x 1) + 3 = 6 = 6th Element (3 x 2) + 3 = 9 = 9th Element etc. How about the :nth-child(2n+1)? (2 x 0) + 1 = 1 = 1st Element (2 x 1) + 1 = 3 = 3rd Element (2 x 2) + 1 = 5 = 5th Element etc. Hey wait! (3 x 0) = 0 = no match (3 x 1) = 3 = 3rd Element (3 x 2) = 6 = 6th Element (3 x 3) = 9 = 9th Element etc. So as you can see, the matches are exactly the same, no need for the "+3". Share On
CSS (Feuilles de style) Septembre 2016 Cours CSS Le concept de feuilles de style est apparu en 1996 avec la publication par le W3C d'une nouvelle recommandation intitulée « Cascading StyleSheets » (feuilles de style en cascade), notée CSS. Le principe des feuilles de style consiste à regrouper dans un même document des caractéristiques de mise en forme associées à des groupes d'éléments. Les feuilles de style ont été mises au point afin de compenser les manques du langage HTML en ce qui concerne la mise en page et la présentation. Elles sont appellées « feuilles de style en cascade » (en anglais « Cascading Style Sheets ») car il est possible d'en définir plusieurs et que les styles peuvent être hérités en cascade. Les feuilles de style permettent notamment : La recommandation CSS2, développé à partir de 1997, apporte un grand nombre de nouvelles fonctionnalités par rapport à la précédente norme (1.0), parmi lesquelles : La recommandation CSS4 est en cours d'écriture au W3C depuis 2010. Compatibilité des navigateurs
Lorem Ipsum - All the facts - Lipsum generator 12 Fun CSS Text Shadows You Can Copy and Paste Typography is everyone’s favorite toy in web design. One particularly fun tool that CSS gives you to play with your type is text-shadow, which seems simple enough at first but can be used to create some remarkable effects with a little ingenuity and creativity. Today we’re going to run through several text-shadow examples that you can copy and paste for your own work. The Basic Shadow The text-shadow property is super easy to work with and works well across all modern browsers without even so much as a vendor prefix! Syntax The syntax for creating a simple text-shadow is shown below. text-shadow: horizontal-offset vertical-offset blur color; Putting this into action, here’s an example with a shadow that has been moved down two pixels and right four pixels with a three pixel blur and a color of black at 30% opacity. text-shadow: 2px 4px 3px rgba(0,0,0,0.3); Here’s the result of this code, a nice simple shadow that is quite appealing all by itself. Why rgba? Quick and Dirty Letterpress Hard Shadow
CSS Tutorial PHP: Hypertext Preprocessor Selectutorial: CSS selectors Selectutorial - CSS selectors Selectutorial - CSS selectors Selectors are one of the most important aspects of CSS as they are used to "select" elements on an HTML page so that they can be styled. Find out more about selectors including the structure of rules, the document tree, types of selectors and their uses. Rules The document tree - it's a family thing Selectors Advanced stuff Selectors in action - a step by step tutorial Max Design Feeds Recent articles Popular articles Other Max Design articles and presentations Associated with webstandardsgroup.org Image Before and After FX The “Personal License (single use)” grants you a non-exclusive and non-transferable right to make use of this product in a single non-commercial* website (or application**), your own work or client work. * A non-commercial application is an application which is not owned by a company, even if the application in which this product will be included does not directly generate income an individual, when the application in which this product will be included generates income in any form (i.e. a website with paid advertising) ** An application can be a website, a software, an electronic document such as a PowerPoint presentation or an e-book, a printed document, a video production There is no restriction on the number of copies of this product within the same application. If you want to use this product in multiple non-commercial applications owned by:
Developing Backbone.js Applications - By Addy Osmani (@addyosmani) Available free for open-source reading below or for purchase via the O'Reilly store. Pull requests and comments always welcome. Prelude Not so long ago, “data-rich web application” was an oxymoron. Traditionally, web applications left the heavy-lifting of data to servers that pushed HTML to the browser in complete page loads. Think of the Ajax shopping cart which doesn’t require a refresh on the page when adding an item to your basket. The rise of arbitrary code on the client-side which can talk to the server however it sees fit has meant an increase in client-side complexity. Thankfully, there are a growing number of JavaScript libraries that can help improve the structure and maintainability of your code, making it easier to build ambitious interfaces without a great deal of effort. Begin with the fundamentals, work your way through the exercises, and learn how to build an application that is both cleanly organized and maintainable. Target Audience Credits <!
What is appropriate ordering of css selector? eg p.class or .class p TodoMVC