React js example. 404 error page

Preview Code

1. First, we need fresh reactjs setup, and for that, we need to run below commands into out terminal, and also we should have latest node version installed on our system:

npx create-react-app my-awesome-project

cd my-awesome-project

npm start

2. Now we need to run below commands into our project terminal to get bootstrap and related modules into our reactjs application:

npm install [email protected] --save

npm start //For start project again

3. Finally for the main output, we need to add below code into our my-awesome-project/src/App.js file or if you have fresh setup then you can replace my-awesome-project/src/App.js file code with below code:

import React from 'react';
import './App.css';
import 'bootstrap/dist/css/bootstrap.min.css';


function App() {
  
	return (
		<div>
			<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css" rel="stylesheet"/>
<div class="error-header"> </div>
<div class="container ">
    <section class="error-container text-center">
        <h1>404</h1>
        <div class="error-divider">
            <h2>PAGE NOT FOUND.</h2>
            <p class="description">We Couldn't Find This Page</p>
        </div>
        <a href="#/" class="return-btn"><i class="fa fa-home"></i>Home</a>
    </section>
</div>
		</div>
	);
}
export default App;

4. Now we need to add below code into our my-awesome-project/src/App.css file :

body{
    background-color: #39bbdb;
    color: #fff;
    padding-bottom: 0;
    min-height: 100%;
    font-family: 'Open Sans','Segoe UI';
    font-size: 13px;
}

.error-header {
  background: #fff;
  height: 180px;
}

.error-container {
  background: rgba(0,0,0,.05);
  text-align: center;
}

.error-container h1 {
  color: #39bbdb;
}

.error-container h1 {
  font-size: 110px;
  font-weight: 300;
  margin: -103px 0 0 0;
  text-align: center;
}

.error-divider {
  margin-top: -27px;
  padding: 30px 0;
}

.error-container h2 {
  font-size: 58px;
  font-weight: 300;
  margin: 0;
  text-transform: uppercase;
}

.error-container p.description {
  color: #e5e5e5;
  font-size: 40px;
  margin: 0;
}

.return-btn, .return-btn:hover {
  border: 1px solid rgba(255,255,255,.3);
  padding: 10px 15px;
  margin-top: 100px;
  margin-bottom: 30px;
  display: inline-block;
  -webkit-border-radius: 5px;
  -webkit-background-clip: padding-box;
  -moz-border-radius: 5px;
  -moz-background-clip: padding;
  border-radius: 5px;
  background-clip: padding-box;
  color: #fff;
  font-size: 16px;
  font-weight: 300;
}

a:hover{
    text-decoration:none;    
}