This simple demo is built to load random image on page load.
HTML
<div id="banner-load"></div>
CSS
.fade-in{
-webkit-animation: fade-in 2s ease;
-moz-animation: fade-in ease-in-out 2s both;
-ms-animation: fade-in ease-in-out 2s both;
-o-animation: fade-in ease-in-out 2s both;
animation: fade-in 2s ease;
visibility: visible;
-webkit-backface-visibility: hidden;}
@-webkit-keyframes fade-in{0%{opacity:0;} 100%{opacity:1;}}
@-moz-keyframes fade-in{0%{opacity:0} 100%{opacity:1}}
@-o-keyframes fade-in{0%{opacity:0} 100%{opacity:1}}
@keyframes fade-in{0%{opacity:0} 100%{opacity:1}}
jQuery
<!--Don't forget Jquery-->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<!--New images on load -->
<script>
//Add your images, we'll set the path in the next step
var images = ['banner-1.jpg', 'banner-2.jpg', 'banner-3.jpg', 'banner-4.jpg'];
//Build the img, then do a bit of maths to randomize load and append to a div. Add a touch off css to fade them badboys in all sexy like.
$('<img class="fade-in" src="' + images[Math.floor(Math.random() * images.length)] + '"> class="img-fluid"').appendTo('#banner-load');
</script>
