How does the browser interpret the CSS property transform: none?

Does the transform: none result in matrix(1,0,0,1,0,0) or a different outcome?

I am looking to reset the transform; what is the best approach for this?

<style>
.box{
   height: 100px;
width: 100px;
background-color: red;
transition: 0.5s;
transform: translate(100px) rotate(45deg);
}
  /* Approach one */
.box:hover{
transform: none; /* Unsure of the resulting transformation by the browser */
}
  /* Approach two */
.box:hover{
transform: translate(0) rotate(0); /* Browser computes matrix(1,0,0,1,0,0) */
}
  /* Approach three */
.box:hover{
transform: translate(0); /* Browser calculates matrix(1,0,0,1,0,0) */
}
<style>

<div class="box">
</div>

Answer №1

What is the best approach to resetting a transform?

It's crucial to understand that each approach serves a different purpose, so it's essential to choose the right one from the start.

As stated in the official specification:

Any computed value for the transform property (excluding none) impacts the containing block and stacking context as outlined in § 2 The Transform Rendering Model.

In addition,

For elements following the CSS box model, applying any value other than none to the transform property establishes a stacking context.

Understanding stacking context creation is vital as it can have implications on your layout.

Related: Why does an element with a z-index value not cover its child?

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