<!doctype html>
<meta charset=utf-8>
<title>CSS-contain test reference: style containment dynamic containment set unset invalidation</title>
<link rel="author" title="Daniil Sakhapov" href="sakhapov@google.com">

<p>Test passes if the text below is "A1(+-" (not including the quotation marks).<p>
<div>A<div>1 (</div>+ -</div>
