我目前正在尝试一些动画并获得此结构:
https://jsfiddle.net/49qg3h1w/3/
或
<div style="position: relative; background: black; height: 100vh; width: 100vw;">
<div style="position: absolute; z-index: -1;">
<!-- Make this element overlap it's parents -->
<div style="background-color: red; width: 20px; height: 20px; z-index: 2;">
</div>
</div>
</div>
我如何使红色元素或其子元素之一与其父元素重叠?
子级始终与父级重叠。