<!DOCTYPE html>
<html>
    <head>
        <title>Full Screen Background Image Slider</title>
        <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css">
        <script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.8.3/modernizr.min.js" type="text/javascript" async></script>
    </head>
    <body>
    
    <div id="landing-header">
 		<h1 class="pb-3 font-weight-bold text-white">Welcome !</h1>
		<a href="#" class="btn btn-lg btn-success">More info</a>
    </div>
    
    <ul class="slideshow">
      <li></li>
      <li></li>
      <li></li>
      <li></li>
      <li></li>
    </ul>
body {
    background: #000;
}

#landing-header {
    z-index: 1;
    position: relative;
    text-align: center;
    padding-top: 40vh;
}

.slideshow { 
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0;
    list-style: none;
    margin: 0;
    padding: 0;
}

.slideshow li { 
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background-size: cover;
    background-position: 50% 50%;
    background-repeat: no-repeat;
    opacity: 0;
    z-index: 0;
    animation: imageAnimation 50s linear infinite; 
}

.slideshow li:nth-child(1) { 
    background-image: url(http://i.imgur.com/K3mPv14.jpg);
}
.slideshow li:nth-child(2) { 
    background-image: url(http://i.imgur.com/SBEmFpv.jpg);
    animation-delay: 10s; 
}
.slideshow li:nth-child(3) { 
    background-image: url(http://i.imgur.com/emvhOnb.jpg);
    animation-delay: 20s; 
}
.slideshow li:nth-child(4) { 
    background-image: url(http://i.imgur.com/2LSMCmJ.jpg);
    animation-delay: 30s; 
}
.slideshow li:nth-child(5) { 
    background-image: url(http://i.imgur.com/TVGe0Ef.jpg);
    animation-delay: 40s; 
}

@keyframes imageAnimation { 
    0% { 
        opacity: 0; 
        animation-timing-function: ease-in;
    }
    10% {
        opacity: 1;
        animation-timing-function: ease-out;
    }
    20% {
        opacity: 1;
    }
    30% {
        opacity: 0;
    }
}

/* Older browser support - .no-cssanimations class added by modernizr */
.no-cssanimations .slideshow li {
    opacity: 1;
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.