<!DOCTYPE html>
<html>
<head>
<link rel="author" title="Sammy Gill" href="mailto:sammy.gill@apple.com">
<link rel="help" href="https://drafts.csswg.org/css-rhythm/#block-step-size">
<link rel="match" href="../../reference/ref-filled-green-100px-square-only.html">
<meta name="assert" content="Block level SVG is affected by block-step-size">
<style>
.container {
  display: flow-root;
  background-color: green;
  width: 100px;
}
.block-step {
  display: block;
  block-step-size: 100px;
}
</style>
</head>
<body