# CSS - scaleZ()

The `scaleZ()` CSS function modifies the z-coordinate of each element point by a constant factor, except if this scale factor is `1`, in which case the function is the identity transform. The scaling is not isotropic and the angles of the element are not conserved.

## Examples

### HTML

HTML
```<p>foo</p>
<p class="translated">bar</p>
<p class="scaled">bar</p>```

### CSS

CSS
```p {
width: 50px;
height: 50px;
background-color: teal;
}

.translated{
/* Adding a perspective to create a 3d space */
transform: perspective(500px) translateZ(100px);
}

.scaled{
/* Adding a perspective to create a 3d space */
transform: perspective(500px) scaleZ(2) translateZ(100px);
}```

## Syntax

CSS
`scaleZ(s)`

## Description

The `scaleZ()` CSS function modifies the z-coordinate of each element point by a constant factor, except if this scale factor is `1`, in which case the function is the identity transform. The scaling is not isotropic and the angles of the element are not conserved.

`scaleZ(sz)` is a shorthand for `scale3d(1, 1, sz)`.

`scaleZ(-1)` defines an axial symmetry along the z-axis passing by the origin (as specified by the `transform-origin` property).

s
Is a `<number>` representing the scaling factor to apply on the z-coordinate of each point of the element.
Cartesian coordinates on ℝ2 Homogeneous coordinates on ℝℙ2 Cartesian coordinates on ℝ3 Homogeneous coordinates on ℝℙ3
This transform applies to the 3D space and cannot be represented on the plane. $\left(\begin{array}{cc}10& 0\\ 01& 0\\ 0& 0& s\end{array}\right)$ $\left(\begin{array}{ccc}10& 0& 0\\ 01& 0& 0\\ 0& 0& s& 0\\ 0& 0& 0& 1\end{array}\right)$