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[![Build status](https://travis-ci.org/PolymerElements/iron-flex-layout.svg?branch=master)](https://travis-ci.org/PolymerElements/iron-flex-layout) [![Published on webcomponents.org](https://img.shields.io/badge/webcomponents.org-published-blue.svg)](https://beta.webcomponents.org/element/PolymerElements/iron-flex-layout) ## &lt;iron-flex-layout&gt; The `<iron-flex-layout>` component provides simple ways to use [CSS flexible box layout](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Flexible_boxes), also known as flexbox. This component provides two different ways to use flexbox: 1. [Layout classes](https://github.com/PolymerElements/iron-flex-layout/tree/master/iron-flex-layout-classes.html). The layout class stylesheet provides a simple set of class-based flexbox rules, that let you specify layout properties directly in markup. You must include this file in every element that needs to use them. Sample use: <!-- ``` <custom-element-demo> <template> <script src="../webcomponentsjs/webcomponents-lite.min.js"></script> <link rel="import" href="iron-flex-layout-classes.html"> <dom-module id="demo-element"> <template> <custom-style> <style is="custom-style" include="iron-flex iron-flex-alignment"></style> </custom-style> <style> .container, .layout { background-color: #ccc; padding: 4px; } .container div, .layout div { background-color: white; padding: 12px; margin: 4px; } </style> <next-code-block></next-code-block> </template> <script>Polymer({is: "demo-element"});</script> </dom-module> <demo-element></demo-element> </template> </custom-element-demo> ``` --> ```html <div class="layout horizontal layout-start" style="height: 154px"> <div>cross axis start alignment</div> </div> ``` 1. [Custom CSS mixins](https://github.com/PolymerElements/iron-flex-layout/blob/master/iron-flex-layout.html). The mixin stylesheet includes custom CSS mixins that can be applied inside a CSS rule using the `@apply` function. A complete [guide](https://elements.polymer-project.org/guides/flex-layout) to `<iron-flex-layout>` is available. ## Changes in 2.0 - removed the deprecated `/deep/` classes -- files removed: `classes/iron-flex-layout.html`, `classes/iron-shadow-flex-layout`