# skew()

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The skew() CSS function defines a transformation that skews an element on the 2D plane. Its result is a <transform-function> data type.

This transformation is a shear mapping (transvection) that distorts each point within an element by a certain angle in the horizontal and vertical directions. The coordinates of each point are modified by a value proportionate to the specified angle and the distance to the origin; thus, the farther from the origin a point is, the greater will be the value added it.

## Syntax

The skew() function is specified with either one or two values, which represent the amount of skewing to be applied in each direction.

skew(ax)

skew(ax, ay)

### Values

ax
Is an <angle> representing the angle to use to distort the element along the abscissa.
ay
Is an <angle> representing the angle to use to distort the element along the ordinate. If not defined, its default value is 0, resulting in a purely horizontal skewing.
Cartesian coordinates on ℝ2 Homogeneous coordinates on ℝℙ2 Cartesian coordinates on ℝ3 Homogeneous coordinates on ℝℙ3
$\left(\begin{array}{c}1tan\left(ax\right)\\ tan\left(ay\right)1\end{array}\right)$ $\left(\begin{array}{cc}1tan\left(ax\right)& 0\\ tan\left(ay\right)1& 0\\ 0& 0& 1\\ \end{array}\right)$ $\left(\begin{array}{cc}1tan\left(ax\right)& 0\\ tan\left(ay\right)1& 0\\ 0& 0& 1\end{array}\right)$ $\left(\begin{array}{ccc}1tan\left(ax\right)& 0& 0\\ tan\left(ay\right)1& 0& 0\\ 0& 0& 1& 0\\ 0& 0& 0& 1\end{array}\right)$
[1 tan(ay) tan(ax) 1 0 0]

## Examples

### Using a single x-angle

#### HTML

<div>Normal</div>
<div class="skewed">Skewed</div>

#### CSS

div {
width: 80px;
height: 80px;
background-color: skyblue;
}

.skewed {
transform: skew(10deg); /* Equal to skewX(10deg) */
background-color: pink;
}

### Using two angles

#### HTML

<div>Normal</div>
<div class="skewed">Skewed</div>

#### CSS

div {
width: 80px;
height: 80px;
background-color: skyblue;
}

.skewed {
transform: skew(10deg, 10deg);
background-color: pink;
}

## Specifications

Specification Status Comment
CSS Transforms Level 1
The definition of 'skew()' in that specification.
Working Draft Initial definition

## Browser compatibility

Please see the <transform-function> data type for compatibility info.