<!DOCTYPE html> <html><head><meta charset="utf-8"> <title>CSS Values and Units Test Reference File</title> <link href="http://florian.rivoal.net/" rel="author" title="Florian Rivoal"> <style> svg { width: 10ch; writing-mode: vertical-rl; text-orientation: upright; } </style> </head><body> <p>Test passes if there is a <strong>filled green square</strong> and <strong>no red</strong>.</p> <svg viewBox="0 0 100 100"><rect y="0" width="100" fill="green" x="0" height="100"></rect></svg> </body></html>