Backstretch via CSS

HTML

<script src="https://raw.github.com/srobbin/jquery-backstretch/master/jquery.backstretch.min.js"></script>
<div id="backstretch-overlay"></div>
<div id="backstretch-container"></div>

CSS

#backstretch-container {
    position: absolute;
    z-index: -2;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
}
#backstretch-overlay {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
    z-index: -1;
    background-image: repeating-linear-gradient(
        0deg, 
        transparent, 
        transparent
        2px, rgba(0, 0, 0, 0.1) 0, rgba(0, 0, 0, 0.1) 3px
    );
}

JavaScript

$('#backstretch-container').backstretch([
 'http://host.ailinkedlaw.com//Common/Images/Backstretch/20181206112720590.png'
, 'http://www.wallpaperswala.com/wp-content/uploads/2013/04/big-fish-wallpapers.jpg'
], {duration: 5000, fade: 850});