translatez视差滚动不起作用

我试图做一个简单,纯css视差部分的网页。我申请 perspective 到 body 元素和 preserve-3d 对于节容器,但背景图像的滚动速度并不慢,它们只是正常滚动。

HTML:

<div class="p-section">
    <div class="content"></div>
    <div class="bg"></div>
</div>
<div class="p-section">
    <div class="content"></div>
    <div class="bg"></div>
</div>
<div class="p-section">
    <div class="content"></div>
    <div class="bg"></div>
</div>

CSS:

body {
    width: 100vw;
    height: 100vh;
    overflow-x: hidden;
    overflow-y: scroll;
    perspective: 10px;
}
.p-section {
    transform-style: preserve-3d;
    height: 100vh;
    position: relative;
}
.content,
.bg {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
}
.bg {
    transform: translateZ(-10px) scale(2);
}

这里有一个 CodePen .