<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
div {
height: 100vh;
background: rgba(0, 0, 0, .7);
color: #fff;
line-height: 100vh;
text-align: center;
font-size: 20vh;
}
.a-img1 {
background-image: url(https://images.pexels.com/photos/1097491/pexels-photo-1097491.jpeg);
background-attachment: fixed;
background-size: cover;
background-position: center center;
}
.a-img2 {
background-image: url(https://images.pexels.com/photos/2437299/pexels-photo-2437299.jpeg);
background-attachment: fixed;
background-size: cover;
background-position: center center;
}
.a-img3 {
background-image: url("https://images.pexels.com/photos/1005417/pexels-photo-1005417.jpeg");
background-attachment: fixed;
background-size: cover;
background-position: center center;
}
</style>
</head>
<body>
<div class="a-text">1</div>
<div class="a-img1">2</div>
<div class="a-text">3</div>
<div class="a-img2">4</div>
<div class="a-text">5</div>
<div class="a-img3">6</div>
<div class="a-text">7</div>
</body>
</html>
