marker-start

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2017.

The marker-start CSS property points to a marker that will be drawn on the first vertex of the element's path; that is, at its starting vertex. The marker must have been defined using an SVG element, and can only be referenced with a value. The value of the CSS property overrides any values of the marker-start attribute in the SVG.

For many marker-supporting shapes, the first and last vertices are in the same place: for example, the top left corner of a . In such shapes, if both the first and last markers are defined, two markers will be drawn at that point, though they may not point in the same direction.

Note: The marker-start property will only have an effect for elements that can use SVG markers. See marker-start for a list.

Syntax

css

marker-start: none;
marker-start: url(markers.svg#arrow);

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

Values

none: This means no marker will be drawn at the first vertex of the element's path.
: A that refers to a marker defined by an SVG element, to be drawn at the first vertex of the element's path. If the URL reference is invalid, no marker will be drawn at the path's first vertex.

Formal definition

Initial value	`none`
Applies to	, , , , , , and elements in an `svg`
Inherited	yes
Computed value	as specified, but with values made absolute
Animation type	discrete

Formal syntax

marker-start = 
  none          |
    

 = 
    

 = 
    |
    

 = 
  url(  * )  |
                        

 = 
  src(  * )

Example

html,
body,
svg {
  height: 100%;
}

html

css

polyline#test {
  marker-start: url(#triangle);
}

Specifications

Specification
Scalable Vector Graphics (SVG) 2 # MarkerStartProperty