chromium/third_party/blink/web_tests/external/wpt/css/css-viewport/zoom/reference/stroke-ref.html

<!DOCTYPE html>
<title>CSS zoom applies to stroke, stroke-dasharray, and stroke-dashoffset</title>
<link rel="author" title="Stefan Zager" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/css-viewport/">

<style>
html, body {
  margin: 0;
  --scale: 1;
}
svg {
  display: block;
}
.zoom {
  --scale: 2;
}
.dash {
  stroke-width: calc(6px * var(--scale));
  stroke-dasharray: calc(10px * var(--scale));
  stroke-dashoffset: calc(7px * var(--scale));
  stroke: hotpink;
  fill: none;
}
</style>

<div class="dash">
  <svg width="200" height="50">
    <line x1="25" y1="20" x2="175" y2="20" />
  </svg>
</div>

<div class="dash zoom">
  <svg width="400" height="100">
    <line x1="50" y1="40" x2="350" y2="40" />
  </svg>
</div>

<div class="dash zoom">
  <svg width="400" height="100">
    <line x1="50" y1="40" x2="350" y2="40" />
  </svg>
</div>