Challenge 3: Straight Styling

Your Objective

The goal with this challenge is to gain familiarity with React Native’s style and layout capabilities. To do this, you’ll try to build the following screen:

Your Target


Before you begin, replace the contents of your project’s App.js file with the following:

import React from "react";
import { Image, StyleSheet, Text, View } from "react-native";

export default class App extends React.Component {
  render() {
    return (
      <View style={styles.container}>
        <Text style={styles.welcome}>Next challenge!</Text>
        <Text style={styles.instructions}>
          Try to build a replica of the screen{"\n"}
          shown in the challenge directions.
        <Text style={styles.instructions}>(The one below.)</Text>
            uri: ""

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: "#eee",
    alignItems: "center",
    justifyContent: "center"
  welcome: {
    fontSize: 20,
    textAlign: "center",
    margin: 10
  instructions: {
    marginTop: 10,
    textAlign: "center"
  targetImage: {
    width: 200,
    height: 400,
    marginTop: 25


Intro to Pseudo-CSS

React Native does not implement CSS, however it uses JavaScript-based tooling this is inspired by and feels very much like CSS in certain ways.

Styles are represented as JSON.

.page {
  background-color: orange;
  height: 42px;
  border: 1px solid blue;

…would be…

  page: {
    backgroundColor: 'orange',
    height: 42,
    borderColor: 'blue',
    borderWidth: 1

Styles don’t cascade.

<View style={{ color: "orange" }}>
  <Text>I'm not orange.</Text>

But you can build up styles compositionally:

  <Text style={[styles.defaultText,, styles.centered]}>
    I'm orange and centered.

// ...

const styles = StyleSheet.create({
  defaultText: {
    fontSize: 12
  orange: {
    color: "orange"
  centered: {
    textAlign: "center"

Layout is flexbox-based.

You won’t find any float in React Native styles. Flexbox is a more powerful and elegant alternative, but can have a bit of a learning curve. If you’re new to Flexbox layouts, the CSS-Tricks Flexbox Guide is a teriffic resource.

Useful Documentation

Get to it.

Learning time is over. It’s time to build. How close can you get to the screen below?

You can find the same image included on the above screen here.

And remember that <View> is analogous to HTML’s <div>, <Text> is analogous to <p>, and <Image> is analogous to <img>.

When you’re satisfied, post a screenshot of your app in the #progress channel, then move on to Challenge 4. (If this style challenge felt too easy for you, spend some more time going crazy, pushing the limits of React Native styling. Then post a screenshot of your crazy.)

Extra Credit

If you’re annoyed by this black status bar text on the dark grey background, check out the StatusBar component docs and change it to a lighter color.

Proceed to Challenge 4