Bug 1990642 [wpt PR 55053] - WebKit export of https://bugs.webkit.org/show_bug.cgi?id=295504, a=testonly

Automatic update from web-platform-tests
WebKit export of https://bugs.webkit.org/show_bug.cgi?id=295504

--

wpt-commits: 9ab8d78600db317367ca330b3dfec1777a8615e1
wpt-pr: 55053

UltraBlame original commit: a05fdbb0526234cfb3cd321c077b3c418a0e845e

Author: marco-c

testing/web-platform/tests/css/css-anchor-position/no-anchor-anchor-center-ref.html

@@ -0,0 +1,160 @@
+<
+!
+doctype
+html
+>
+<
+title
+>
+Tests
+that
+'
+anchor
+-
+center
+'
+behaves
+as
+'
+center
+'
+when
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+anchor
+in
+containing
+block
+<
+/
+title
+>
+<
+style
+>
+.
+anchor
+{
+background
+:
+orange
+;
+width
+:
+100px
+;
+background
+-
+color
+:
+orange
+;
+}
+.
+container
+{
+position
+:
+fixed
+;
+top
+:
+20px
+;
+left
+:
+50px
+;
+width
+:
+300px
+;
+height
+:
+200px
+;
+display
+:
+flex
+;
+background
+:
+green
+;
+justify
+-
+content
+:
+center
+;
+}
+.
+target
+{
+position
+:
+absolute
+;
+margin
+:
+0
+auto
+;
+width
+:
+80px
+;
+border
+:
+1px
+#
+000
+solid
+;
+background
+:
+lime
+;
+}
+<
+/
+style
+>
+<
+div
+class
+=
+"
+anchor
+"
+>
+anchor
+<
+/
+div
+>
+<
+div
+class
+=
+"
+container
+"
+>
+<
+div
+class
+=
+"
+target
+"
+>
+target
+1
+<
+/
+div
+>
+<
+/
+div
+>