x - Content — ContextQMD

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

[!NOTE] The x property only applies to {{SVGElement("rect")}}, {{SVGElement("image")}}, {{SVGElement("foreignObject")}}, and {{SVGElement("svg")}} elements nested in an {{SVGElement("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

css

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

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

Values

The {{cssxref("length")}} and {{cssxref("percentage")}} values denote the x-axis coordinate position of the top left corner of the SVG element container.

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

Formal definition

Formal syntax

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 {{SVGAttr("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.

html

<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.

css

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

{{EmbedLiveSample("Defining the x-axis coordinate of SVG shapes", "300", "180")}}

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.

x