1 files changed, 21 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-ruby/ruby-text-collapse-ref.html b/testing/web-platform/tests/css/css-ruby/ruby-text-collapse-ref.html
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index 0000000000..6cbcc7807f
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+++ b/testing/web-platform/tests/css/css-ruby/ruby-text-collapse-ref.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html lang="ja">
+<meta charset="UTF-8">
+<title>CSS Reference: visibility: collapse hides ruby annotations</title>
+<link rel="author" title="Xidorn Quan" href="https://www.upsuper.org">
+<style>
+  body { line-height: 5; }
+  rt { font-size: 80%; }
+</style>
+<ruby>
+  <rb>昆</rb><rb>虫</rb><rb>記</rb>
+  <rt>こん</rt><rt>ちゅう</rt><rt>き</rt>
+</ruby><br>
+<ruby>
+  <rb>昆</rb><rb>虫</rb><rb>記</rb>
+  <rt>こん</rt><rt style="opacity: 0">ちゅう</rt><rt>き</rt>
+</ruby><br>
+<ruby>
+  <rb>昆</rb><rb>虫</rb><rb>記</rb>
+  <rt>こん</rt><rt></rt><rt>き</rt>
+</ruby>