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<!DOCTYPE html><html><head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"><title>Flexbox – React Native | A framework for building native apps using React</title><meta name="viewport" content="width=device-width"><meta property="og:title" content="Flexbox – React Native | A framework for building native apps using React"><meta property="og:type" content="website"><meta property="og:url" content="http://facebook.github.io/react-native/index.html"><meta property="og:image" content="http://facebook.github.io/react-native/img/opengraph.png?2"><meta property="og:description" content="A framework for building native apps using React"><link rel="shortcut icon" href="/react-native/img/favicon.png?2"><link rel="stylesheet" href="/react-native/css/react-native.css"><script type="text/javascript" src="//use.typekit.net/vqa1hcx.js"></script><script type="text/javascript">try{Typekit.load();}catch(e){}</script></head><body><div class="container"><div class="nav-main"><div class="wrap"><a class="nav-home" href="/react-native/"><img src="/react-native/img/header_logo.png">React Native</a><div class="nav-site-wrapper"><ul class="nav-site nav-site-internal"><li><a href="/react-native/docs/getting-started.html" class="active">Docs</a></li><li><a href="/react-native/support.html" class="">Support</a></li><li><a href="https://github.com/facebook/react-native/releases" class="">Releases</a></li><li><a href="http://reactnative.cc" class="">Newsletter</a></li><li><a href="/react-native/showcase.html" class="">Showcase</a></li></ul><ul class="nav-site nav-site-external"><li><a href="https://github.com/facebook/react-native" class="">GitHub</a></li><li><a href="http://facebook.github.io/react" class="">React</a></li></ul></div></div></div><section class="content wrap documentationContent"><div class="nav-docs"><div class="nav-docs-section"><h3>Quick Start</h3><ul><li><a style="margin-left:0;" class="" href="/react-native/docs/getting-started.html#content">Getting Started</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/android-setup.html#content">Android Setup</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/linux-windows-support.html#content">Linux and Windows Support</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/tutorial.html#content">Tutorial</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/videos.html#content">Videos</a></li></ul></div><div class="nav-docs-section"><h3>Guides</h3><ul><li><a style="margin-left:0;" class="" href="/react-native/docs/style.html#content">Style</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/images.html#content">Images</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/gesture-responder-system.html#content">Gesture Responder System</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/animations.html#content">Animations</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/accessibility.html#content">Accessibility</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/direct-manipulation.html#content">Direct Manipulation</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/debugging.html#content">Debugging</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/testing.html#content">Testing</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/javascript-environment.html#content">JavaScript Environment</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/navigator-comparison.html#content">Navigator Comparison</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/known-issues.html#content">Known Issues</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/performance.html#content">Performance</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/upgrading.html#content">Upgrading</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/platform-specific-code.html#content">Platform Specific Code</a></li></ul></div><div class="nav-docs-section"><h3>Guides (iOS)</h3><ul><li><a style="margin-left:0;" class="" href="/react-native/docs/native-modules-ios.html#content">Native Modules</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/native-components-ios.html#content">Native UI Components</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/linking-libraries-ios.html#content">Linking Libraries</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/running-on-device-ios.html#content">Running On Device</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/embedded-app-ios.html#content">Integrating with Existing Apps</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/communication-ios.html#content">Communication between native and React Native</a></li></ul></div><div class="nav-docs-section"><h3>Guides (Android)</h3><ul><li><a style="margin-left:0;" class="" href="/react-native/docs/native-modules-android.html#content">Native Modules</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/native-components-android.html#content">Native UI Components</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/running-on-device-android.html#content">Running On Device</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/embedded-app-android.html#content">Integrating with Existing Apps</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/signed-apk-android.html#content">Generating Signed APK</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/android-ui-performance.html#content">Profiling Android UI Performance</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/android-building-from-source.html#content">Building React Native from source</a></li></ul></div><div class="nav-docs-section"><h3>components</h3><ul><li><a style="margin-left:0;" class="" href="/react-native/docs/activityindicatorios.html#content">ActivityIndicatorIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/datepickerios.html#content">DatePickerIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/drawerlayoutandroid.html#content">DrawerLayoutAndroid</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/image.html#content">Image</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/listview.html#content">ListView</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/mapview.html#content">MapView</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/modal.html#content">Modal</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/navigator.html#content">Navigator</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/navigatorios.html#content">NavigatorIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/pickerios.html#content">PickerIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/progressbarandroid.html#content">ProgressBarAndroid</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/progressviewios.html#content">ProgressViewIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/pulltorefreshviewandroid.html#content">PullToRefreshViewAndroid</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/scrollview.html#content">ScrollView</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/segmentedcontrolios.html#content">SegmentedControlIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/sliderios.html#content">SliderIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/switchandroid.html#content">SwitchAndroid</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/switchios.html#content">SwitchIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/tabbarios.html#content">TabBarIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/tabbarios-item.html#content">TabBarIOS.Item</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/text.html#content">Text</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/textinput.html#content">TextInput</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/toolbarandroid.html#content">ToolbarAndroid</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/touchablehighlight.html#content">TouchableHighlight</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/touchablenativefeedback.html#content">TouchableNativeFeedback</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/touchableopacity.html#content">TouchableOpacity</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/touchablewithoutfeedback.html#content">TouchableWithoutFeedback</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/view.html#content">View</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/viewpagerandroid.html#content">ViewPagerAndroid</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/webview.html#content">WebView</a></li></ul></div><div class="nav-docs-section"><h3>apis</h3><ul><li><a style="margin-left:0;" class="" href="/react-native/docs/actionsheetios.html#content">ActionSheetIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/alertios.html#content">AlertIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/animated.html#content">Animated</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/appregistry.html#content">AppRegistry</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/appstateios.html#content">AppStateIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/asyncstorage.html#content">AsyncStorage</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/backandroid.html#content">BackAndroid</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/cameraroll.html#content">CameraRoll</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/dimensions.html#content">Dimensions</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/interactionmanager.html#content">InteractionManager</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/layoutanimation.html#content">LayoutAnimation</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/linkingios.html#content">LinkingIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/nativemethodsmixin.html#content">NativeMethodsMixin</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/netinfo.html#content">NetInfo</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/panresponder.html#content">PanResponder</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/pixelratio.html#content">PixelRatio</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/pushnotificationios.html#content">PushNotificationIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/statusbarios.html#content">StatusBarIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/stylesheet.html#content">StyleSheet</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/toastandroid.html#content">ToastAndroid</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/vibrationios.html#content">VibrationIOS</a></li></ul></div><div class="nav-docs-section"><h3>Polyfills</h3><ul><li><a style="margin-left:0;" class="active" href="/react-native/docs/flexbox.html#content">Flexbox</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/geolocation.html#content">Geolocation</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/network.html#content">Network</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/timers.html#content">Timers</a></li></ul></div></div><div class="inner-content"><a id="content"></a><h1>Flexbox</h1><div><noscript></noscript><h3><a class="anchor" name="props"></a><a class="edit-github" href="https://github.com/facebook/react-native/blob/master/Libraries/StyleSheet/LayoutPropTypes.js">Edit on GitHub</a>Props <a class="hash-link" href="#props">#</a></h3><div class="props"><div class="prop"><h4 class="propTitle"><a class="anchor" name="alignitems"></a>alignItems <span class="propType">enum('flex-start', 'flex-end', 'center', 'stretch')</span> <a class="hash-link" href="#alignitems">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="alignself"></a>alignSelf <span class="propType">enum('auto', 'flex-start', 'flex-end', 'center', 'stretch')</span> <a class="hash-link" href="#alignself">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="borderbottomwidth"></a>borderBottomWidth <span class="propType">number</span> <a class="hash-link" href="#borderbottomwidth">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="borderleftwidth"></a>borderLeftWidth <span class="propType">number</span> <a class="hash-link" href="#borderleftwidth">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="borderrightwidth"></a>borderRightWidth <span class="propType">number</span> <a class="hash-link" href="#borderrightwidth">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="bordertopwidth"></a>borderTopWidth <span class="propType">number</span> <a class="hash-link" href="#bordertopwidth">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="borderwidth"></a>borderWidth <span class="propType">number</span> <a class="hash-link" href="#borderwidth">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="bottom"></a>bottom <span class="propType">number</span> <a class="hash-link" href="#bottom">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="flex"></a>flex <span class="propType">number</span> <a class="hash-link" href="#flex">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="flexdirection"></a>flexDirection <span class="propType">enum('row', 'column')</span> <a class="hash-link" href="#flexdirection">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="flexwrap"></a>flexWrap <span class="propType">enum('wrap', 'nowrap')</span> <a class="hash-link" href="#flexwrap">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="height"></a>height <span class="propType">number</span> <a class="hash-link" href="#height">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="justifycontent"></a>justifyContent <span class="propType">enum('flex-start', 'flex-end', 'center', 'space-between', 'space-around')</span> <a class="hash-link" href="#justifycontent">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="left"></a>left <span class="propType">number</span> <a class="hash-link" href="#left">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="margin"></a>margin <span class="propType">number</span> <a class="hash-link" href="#margin">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="marginbottom"></a>marginBottom <span class="propType">number</span> <a class="hash-link" href="#marginbottom">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="marginhorizontal"></a>marginHorizontal <span class="propType">number</span> <a class="hash-link" href="#marginhorizontal">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="marginleft"></a>marginLeft <span class="propType">number</span> <a class="hash-link" href="#marginleft">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="marginright"></a>marginRight <span class="propType">number</span> <a class="hash-link" href="#marginright">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="margintop"></a>marginTop <span class="propType">number</span> <a class="hash-link" href="#margintop">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="marginvertical"></a>marginVertical <span class="propType">number</span> <a class="hash-link" href="#marginvertical">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="maxheight"></a>maxHeight <span class="propType">number</span> <a class="hash-link" href="#maxheight">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="maxwidth"></a>maxWidth <span class="propType">number</span> <a class="hash-link" href="#maxwidth">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="minheight"></a>minHeight <span class="propType">number</span> <a class="hash-link" href="#minheight">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="minwidth"></a>minWidth <span class="propType">number</span> <a class="hash-link" href="#minwidth">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="padding"></a>padding <span class="propType">number</span> <a class="hash-link" href="#padding">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="paddingbottom"></a>paddingBottom <span class="propType">number</span> <a class="hash-link" href="#paddingbottom">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="paddinghorizontal"></a>paddingHorizontal <span class="propType">number</span> <a class="hash-link" href="#paddinghorizontal">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="paddingleft"></a>paddingLeft <span class="propType">number</span> <a class="hash-link" href="#paddingleft">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="paddingright"></a>paddingRight <span class="propType">number</span> <a class="hash-link" href="#paddingright">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="paddingtop"></a>paddingTop <span class="propType">number</span> <a class="hash-link" href="#paddingtop">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="paddingvertical"></a>paddingVertical <span class="propType">number</span> <a class="hash-link" href="#paddingvertical">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="position"></a>position <span class="propType">enum('absolute', 'relative')</span> <a class="hash-link" href="#position">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="right"></a>right <span class="propType">number</span> <a class="hash-link" href="#right">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="top"></a>top <span class="propType">number</span> <a class="hash-link" href="#top">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="width"></a>width <span class="propType">number</span> <a class="hash-link" href="#width">#</a></h4></div></div></div><div class="docs-prevnext"><a 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