<!DOCTYPE html> <meta charset="UTF-8"> <title>CSS Reftest Reference</title> <link rel="author" title="GĂ©rard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/"> <style> html { writing-mode: vertical-rl; } </style> <img id="blue" src="support/swatch-blue.png" width="100" height="100" alt="Image download support must be enabled"> <p><img src="support/block-flow-direction-025-exp-res.png" width="359" height="36" alt="Image download support must be enabled"> <!-- The image says: Test passes if there is a blue square in the <strong>upper-right corner</strong> of the page. --> <p style=margin-top:-8px>This text must be written sideways: vertically, with letters rotated 90 degrees.