CODEWITHSUNDEEP
cssgoogle-chromecss-transforms
Daniel Birowsky Popeski
Daniel Birowsky Popeski

Reputation: 9286

Chrome flattens Z-translated elements when opacity is applied

enter image description here

Do you know what is chrome's reason for this? Is there a remedy? 

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width">
    <title>JS Bin</title>
</head>

<body style="perspective:500px">
  
  
    <div style="
            width:40px; 
            height:40px; 
            background: green; 
            padding: 30px; 
            transform: rotateY(50deg); 
            transform-style: preserve-3d">
        <div style="
                transform: translateZ(60px)">
            content
        </div>
    </div>
  
  
  
    <hr style="margin: 40px 0">
  
  
  
    <div style="
              opacity: .5;
              width:40px; 
              height:40px; 
              background: green; 
              padding: 30px; 
              transform: rotateY(50deg); 
              transform-style: preserve-3d">
        <div style="
                transform: translateZ(60px)">
            content
        </div>
    </div>
</body>

</html>

Upvotes: 3

Views: 461

Answers (2)

Erik Engi
Erik Engi

Reputation: 401

Using opacity with a value other than 1 places the element in a new stacking context.

This causes the flattening under browsers which are respecting the new specification.

We can use a wrapper element to set the opcaity (this element can be the one with the main perspective property as well depending on what we need):

<div style="perspective:500px">
    <div style="perspective:inherit;opacity:.5">
        <div style="
            width:40px;
            height:40px;
            background: green;
            padding: 30px;
            transform: rotateY(50deg);
            transform-style: preserve-3d
        ">
            <div style="transform: translateZ(60px)">
                content
            </div>
        </div>
    </div>
</div>

Upvotes: 1

vals
vals

Reputation: 64244

I would say this is what should happen as per standards:

A value of preserve-3d for transform-style establishes a stacking context.

The following CSS property values require the user agent to create a flattened representation of the descendant elements before they can be applied, and therefore override the behavior of transform-style: preserve-3d:

overflow: any value other than ‘visible’

opacity: any value other than 1.

filter: any value other than ‘none’.

w3c spec

Upvotes: 0

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