如何使用CSS创建图像滚动视差效果?

那契顺

我在网上看到了很酷的滚动效果...

在此处输入图片说明

滚动查看各部分时图像与下一张图像融合的位置。我一直在尝试重现它,但似乎无法弄清楚?如何在网络上创建此效果?

这是我看到效果的链接... http://readingbuddysoftware.com/how-it-works/

我尝试position: fixed在屏幕截图中使用z-index,该部分的高于图像,但最后一个屏幕截图始终位于顶部。

有任何想法吗?

更新:由于各种原因(包括放置,使用倾斜...),我无法使用background-imagecss解决方案。我需要使用<img>元素的解决方案

陪同Afif

可以使用和两个类似的图像来完成background-attachement:fixed

这是一个简单的示例:

body {
  min-height:200vh;
  margin:0;
  background:url(https://picsum.photos/id/1069/150/150?grayscale) 20px 20px no-repeat;
  background-attachment:fixed;
}

.box {
  margin-top:220px;
  height:200px;
  background:url(https://picsum.photos/id/1069/150/150) 20px 20px no-repeat,
  grey;
  background-attachment:fixed;
}
<div class="box">

</div>

您可以轻松缩放许多图像:

body {
  min-height:250vh;
  margin:0;
  background:url(https://picsum.photos/id/1069/150/150?grayscale) 50px 50px/auto no-repeat;
  background-attachment:fixed;
}

.box {
  height:200px;
  background:url(https://picsum.photos/id/1069/150/150) 50px 50px/auto no-repeat,
  grey;
  background-attachment:fixed;
}
.box:first-child {
  margin-top:200px;
}
<div class="box">
</div>
<div class="box" style="background-image:url(https://picsum.photos/id/11/150/150);background-color:yellow">
</div>
<div class="box" style="background-image:url(https://picsum.photos/id/106/150/150);background-color:pink">
</div>

您也可以考虑使用img和,position:fixed但是您将需要一些技巧来隐藏使用clip-path

body {
  min-height: 250vh;
  margin: 0;
  padding-top: 100px;
}

img {
  position: fixed;
  top: 50px;
  left: 50px;
}

.box {
  height: 200px;
  background: grey;
  clip-path:polygon(0 0,100% 0,100% 100%,0 100%);
}
<div class="box">
  <img src="https://picsum.photos/id/1074/200/120?grayscale">
</div>
<div class="box" style="background-color:red;">
  <img src="https://picsum.photos/id/1074/200/120">
</div>
<div class="box" style="background-color:yellow;">
  <img  src="https://picsum.photos/id/1024/200/120?grayscale">
</div>
<div class="box" style="background-color:pink;">
  <img src="https://picsum.photos/id/1024/200/120">
</div>

或使用 mask

body {
  min-height: 250vh;
  margin: 0;
  padding-top: 100px;
}

img {
  position: fixed;
  top: 50px;
  left: 50px;
}

.box {
  height: 200px;
  background: grey;
  -webkit-mask:linear-gradient(#fff,#fff);
          mask:linear-gradient(#fff,#fff);
}
<div class="box">
  <img src="https://picsum.photos/id/1074/200/120?grayscale">
</div>
<div class="box" style="background-color:red;">
  <img src="https://picsum.photos/id/1074/200/120">
</div>
<div class="box" style="background-color:yellow;">
  <img  src="https://picsum.photos/id/1024/200/120?grayscale">
</div>
<div class="box" style="background-color:pink;">
  <img src="https://picsum.photos/id/1024/200/120">
</div>


为了获得更好的支持,这与某些JS类似,以避免使用clip-path或mask

我将使用CSS变量更新图片的位置,但您可以轻松地做到以下几点:

window.onscroll = function() {
  var scroll = window.scrollY || window.scrollTop || document.getElementsByTagName("html")[0].scrollTop;
  document.documentElement.style.setProperty('--scroll-var', scroll+"px");
}
:root {
  --scroll-var: 0px;
}

body {
  min-height: 150vh;
  margin: 0;
}

img {
  position: fixed;
  top: 20px;
  left: 20px;
}

.box {
  margin-top: 220px;
  height: 200px;
  background: grey;
  position: relative;
  overflow: hidden;
}

.box img {
  top: calc(-220px + 20px + var(--scroll-var));
  /* margin of box + top of the other image + scroll*/
  position: absolute;
}
<img src="https://picsum.photos/id/1069/150/150?grayscale">
<div class="box">
  <img src="https://picsum.photos/id/1069/150/150">
</div>

有许多图像:

window.onscroll = function() {
  var scroll = window.scrollY || window.scrollTop || document.getElementsByTagName("html")[0].scrollTop;
  document.documentElement.style.setProperty('--scroll-var', scroll+"px");
}
:root {
  --scroll-var: 0px;
}

body {
  min-height: 250vh;
  margin: 0;
  padding-top:200px;
}

img {
  position: fixed;
  top: 50px;
  left: 50px;
}

.box {
  height: 200px;
  background: grey;
  position: relative;
  overflow: hidden;
}
img.f1 {
  top: calc(-200px + 50px + var(--scroll-var));
  position: absolute;
}
img.f2 {
  top: calc(-400px + 50px + var(--scroll-var));
  position: absolute;
}
img.f3 {
  top: calc(-600px + 50px + var(--scroll-var));
  position: absolute;
}
<img src="https://picsum.photos/id/1069/100/100?grayscale">
<div class="box">
  <img class="f1" src="https://picsum.photos/id/1069/100/100">
</div>
<div class="box" style="background-color:yellow;">
  <img class="f2" src="https://picsum.photos/id/107/100/100">
</div>
<div class="box" style="background-color:pink;">
  <img class="f3" src="https://picsum.photos/id/1072/100/100">
</div>

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