SOURCE

console 命令行工具 X clear

                    
>
console
<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>
<div class="a-text">1</div>
<div class="a-img1">
    <span>2</span>
</div>
<div class="a-text">3</div>
<div class="a-img2">
    <span>4</span>
</div>