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 July 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>
<length-percentage> =
<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
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