<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Test for bug 1134849</title> <style> div { display: inline-block; vertical-align: top; inline-size: 12em; block-size: 15em; border: solid silver; margin: 10px; } p { margin: 5px; } .h { writing-mode: horizontal-tb; } .v-lr { writing-mode: vertical-lr; } .v-rl { writing-mode: vertical-rl; } span, b { display: inline; } /* but because they're orthogonal, this will compute to inline-block */ </style> </head> <body> <div class="h"> <p>The <span class="v-lr" id="test">quick <b>brown</b> fox</span> jumps over<br>the <b class="v-rl">lazy</b> dog.</p> </div> <div class="v-lr"> <p>The <span class="h">quick <b>brown</b> fox</span> jumps over<br>the <b class="h">lazy</b> dog.</p> </div> <div class="v-rl"> <p>The <span class="h">quick <b>brown</b> fox</span> jumps over<br>the <b class="h">lazy</b> dog.</p> </div> <br> <script> /* this should append "inline-block" to the document, not "inline" */ document.write(window.getComputedStyle(document.querySelector("#test")).display); </script> </body> </html>