`x` CSS property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It's been available across browsers since January 2020.

The x CSS property defines the x-axis coordinate of the top left corner of the SVG <rect> shape, <image> image, <foreignObject> viewport or nested <svg> viewport relative to the nearest <svg> ancestor's user coordinate system. If present, it overrides the element's x attribute.

Note: The x property only applies to <rect>, <image>, <foreignObject>, and <svg> elements nested in an <svg>. It has no effect on the outermost <svg> elements itself, and does not apply to other SVG elements nor to HTML elements or pseudo-elements.

Syntax

/* length and percentage values */
x: 40px;
x: 40%;

/* Global values */
x: inherit;
x: initial;
x: revert;
x: revert-layer;
x: unset;

Values

The <length> and <percentage> values denote the x-axis coordinate position of the top left corner of the SVG element container.

<length>: As an absolute or relative length, it can be expressed in any unit allowed by the CSS <length> data type.
<percentage>: Percentages refer to the width of the SVG viewBox, if declared, otherwise, the percentage refers to the width of the current SVG viewport.

Formal definition

Initial value	0
Applies to	`<svg>`, `<rect>`, `<image>`, and `<foreignObject>` elements in `<svg>`
Inherited	no
Percentages	refer to the width of the current SVG viewport
Computed value	the percentage as specified or the absolute length
Animation type	by computed value type

Formal syntax

x = 
  <length> |
  <percentage>

Examples

Defining the x-axis coordinates of SVG shapes

This example demonstrates the basic use case of x, and how the CSS x property takes precedence over the x attribute.

HTML

We include four identical SVG <rect> elements; their x and y attributes values are all 10, meaning the four rectangles are all in the same location, 10px from the top and left corner of the SVG viewport.

<svg xmlns="http://www.w3.org/2000/svg">
  <rect width="100" height="100" x="10" y="10" />
  <rect width="100" height="100" x="10" y="10" />
  <rect width="100" height="100" x="10" y="10" />
  <rect width="100" height="100" x="10" y="10" />
</svg>

CSS

We style all the rectangles to have a black border and be slightly transparent, so overlapping rectangles are visible. We provide each rectangle with different fill and x values.

svg {
  border: 1px solid;
  width: 300px;
}

rect {
  fill: none;
  stroke: black;
  opacity: 0.8;
}

rect:nth-of-type(2) {
  x: 3em;
  fill: red;
}

rect:nth-of-type(3) {
  x: 180px;
  fill: yellow;
}

rect:nth-of-type(4) {
  x: 50%;
  fill: orange;
}

Results

The left edges of the rectangles are at 10 (from the attribute), 3em, 180px, and 50%, respectively. The SVG is 300px wide, so the last rectangle's left side is at the 150px mark.

Specifications

Specification
Scalable Vector Graphics (SVG) 2 # X

Browser compatibility

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`x`	42	79	69	29	9	42	79	29	9	4.0	42	9