# skewX()

The `skewX()` CSS function defines a transformation that skews an element in the horizontal direction 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 direction. The abscissa coordinate of each point is 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.

Note: `skewX(a)` is equivalent to `skew(a)`.

## Syntax

```skewX(a)
```

### Values

`a`
Is an `<angle>` representing the angle to use to distort the element along the abscissa.
Cartesian coordinates on ℝ2 Homogeneous coordinates on ℝℙ2 Cartesian coordinates on ℝ3 Homogeneous coordinates on ℝℙ3
$\left(\begin{array}{c}1tan\left(ay\right)\\ 01\end{array}\right)$ $\left(\begin{array}{cc}1tan\left(ay\right)& 0\\ 01& 0\\ 0& 0& 1\end{array}\right)$ $\left(\begin{array}{cc}1tan\left(ay\right)& 0\\ 01& 0\\ 0& 0& 1\end{array}\right)$ $\left(\begin{array}{ccc}1tan\left(ay\right)& 0& 0\\ 01& 0& 0\\ 0& 0& 1& 0\\ 0& 0& 0& 1\end{array}\right)$
`[1 0 tan(a) 1 0 0]`

## Examples

### HTML

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

### CSS

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

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

## Specifications

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

## Browser compatibility

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