Dear Ivo,
I would like to insert Parallax image to Custom particle. Everything is works fine, just the image does not fit to the left side of the page (I sent a screen shut). Do you have any idea, how to fix this?
I used this code:

 <div class="uk-margin uk-text-contrast uk-text-center uk-flex uk-flex-center uk-flex-middle" data-uk-parallax="{bg: '-200'}" style="height: 400px; width: 1920px; background-image: url('//cdn.inspiretheme.com/images/image.jpg');">

                               <div class="uk-width-medium-1-2" data-uk-parallax="{opacity: '0,1', scale: '0,1', viewport: '0.5'}">

                                    <h1 class="uk-text-contrast">Heading</h1>

                                    <p class="uk-text-large">Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>

                                </div>

                            </div>

Many thanks for your help,
Kind regards, Gyula