Parallax scrolling is an amazing scrolling effect that causes an object to move at an unusual speed than a page. The Parallax scroll effect is often used for modern web design where the background image is much slower than before when the user navigates to a web page.


Parallax JQuery Plugin CDN 

https://cdn.jsdelivr.net/parallax.js/1.4.2/parallax.min.js

#index.php

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>Cool Parallax.js Scrolling JQuery Plugin</title>
        <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
        <style>

            body{
                margin: 0;padding: 0;
                overflow-x: hidden;
            }
            .parallax-window {
                min-height: 400px;
                background: transparent;
            }
            
            #banner-absolute{
                color: #fff;
                position: relative;
                top: 60px;
                left: 30px;
            }
            
        </style>
    </head>
    <body>
        <div class="container-fluid">
            <div class="row">
                <div class="col-md-12">

                    <div class="parallax-window" data-parallax="scroll" data-image-src="bg.jpg">
                        <div id="banner-absolute">
                            <h1>Cool parallax scrolling jquery</h1>
                            <p>Parallax scrolling is an amazing scrolling effect that causes an element to move at an unusual 
                                speed than the page.
                            </p>
                        </div>
                    </div>
                </div>
            </div>
        </div>
        <div style="height: 400px;"></div>
        <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
        <script src="https://cdn.jsdelivr.net/parallax.js/1.4.2/parallax.min.js"></script>
    </body>
</html>

Output: