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Using CSS flexible boxes. The CSS3 Flexible Box, or flexbox, is a layout mode providing for the arrangement of elements on a page such that the elements behave predictably when the page layout must accommodate different screen sizes and different display devices.

Using CSS flexible boxes

For many applications, the flexible box model provides an improvement over the block model in that it does not use floats, nor do the flex container's margins collapse with the margins of its contents. Many designers will find the flexbox model easier to use. Child elements in a flexbox can be laid out in any direction and can have flexible dimensions to adapt to the display space. Positioning child elements is thus much easier, and complex layouts can be achieved more simply and with cleaner code, as the display order of the elements is independent of their order in the source code. This independence intentionally affects only the visual rendering, leaving speech order and navigation based on the source order. Solved by Flexbox — Cleaner, hack-free CSS. All of the code samples on this site show how to solve a particular design problem with Flexbox.

Solved by Flexbox — Cleaner, hack-free CSS

They show just the code that's needed to make the demos work in a spec-compliant browser. Some browsers do not fully comply with the latest version of the spec, so sadly, a few workarounds were necessary. Workarounds for non-compliant browsers are not shown in the code samples, but if you're curious about those implementation details, you can check out the source files.

Each demo links to its source, and all browser-specific workarounds are well-documented, so don't be afraid to take a look. The vendor prefixing and translating of current flex properties to their legacy equivalents is all handled by autoprefixer. The class naming convention used in the code samples and source files is taken from SUIT CSS, which is based on BEM methodologies. If you find a mistake or would like to suggest an additional example, feel free to open an issue or submit a pull request on Github. A Complete Guide to Flexbox. Background The Flexbox Layout (Flexible Box) module (currently a W3C Last Call Working Draft) aims at providing a more efficient way to lay out, align and distribute space among items in a container, even when their size is unknown and/or dynamic (thus the word "flex").

A Complete Guide to Flexbox

The main idea behind the flex layout is to give the container the ability to alter its items' width/height (and order) to best fill the available space (mostly to accommodate to all kind of display devices and screen sizes). A flex container expands items to fill available free space, or shrinks them to prevent overflow. Most importantly, the flexbox layout is direction-agnostic as opposed to the regular layouts (block which is vertically-based and inline which is horizontally-based). While those work well for pages, they lack flexibility (no pun intended) to support large or complex applications (especially when it comes to orientation changing, resizing, stretching, shrinking, etc.). Basics & Terminology. A Visual Guide to CSS3 Flexbox Properties. Flex-direction This property specifies how flex items are laid out in the flex container, by setting the direction of the flex container’s main axis.

A Visual Guide to CSS3 Flexbox Properties

They can be laid out in two main directions, like rows horizontally or like columns vertically. Values: With row direction the flex items are stacked in a row from left-to-right in ltr context. Redécouvrez la mise en page avec Flexbox. Qu’est qu’une flex-box Flexbox est une nouvelle propriété CSS qui nous permet de gérer simplement la mise en page d’une série d’éléments au sein d’un élément parent et plus précisément de : Mettre en place plusieurs éléments sur une ligne sans avoir à se soucier de la largeur de chacun d’eux.

Redécouvrez la mise en page avec Flexbox

Modifier rapidement le sens de lecture vertical/horizontal. Aligner les éléments à gauche, à droite ou au centre du parent. Modifier l’ordre d’affichage des différents éléments. Flexbox n’est pour le moment utilisable que sur les versions les plus récentes de nos navigateurs, et avec des préfixes pour certains. Pourquoi parler des flexbox si celles-çi ne sont pas encore utilisable sur tous les navigateurs ? Créons notre .flexcontainer. CSS3 Flexbox Layout module. Vous connaissez certainement le modèle de boîte classique en CSS et ses dispositions de type “block” ou “inline”, sachez que Flexbox CSS3 a été conçu pour étendre ce périmètre en introduisant un nouveau modèle de boîte distinct, que l’on appellera “le Modèle de boîte flexible”.

CSS3 Flexbox Layout module

En février 2016 est sorti mon livre entièrement dédié à Flexbox. Il se nomme "CSS3 Flexbox : plongez dans les CSS modernes" et je vous recommande bien évidemment sa lecture afin de comprendre tous les rouages de ce positionnement révolutionnaire, et d'en maîtriser tous les aspects. Au sein de ce schéma, on ne raisonne plus en “block” ou “inline”, ni même en float ou autres types de boîtes “classiques” CSS, mais en “Modèle de boîte flexible”, dont les quatre possibilités principales sont : Note : ce tutoriel a été initialement rédigé en octobre 2010.

Il a subi une refonte intégrale en décembre 2014 pour se mettre à jour.