marker-start

Defines the symbol or marker that will be displayed at the very first point of an SVG path. It's commonly used to add arrowheads to the start of a line.

It is documented as part of the Scalable Vector Graphics specification.

/* Usage Example */
path {
  marker-start: url(#arrow);
  /* places a custom arrow marker at the beginning of the path */
}

/* Syntax */
marker-start: none;

/* Global values */
marker-start: inherit;
marker-start: initial;
marker-start: revert;
marker-start: revert-layer;
marker-start: unset;
Widely available Since 2020 96% global usage

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

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