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<!DOCTYPE html>
<title>CSS Container Queries Test: Container for ::first-letter/::first-line pseudo elements</title>
<link rel="help" href="https://drafts.csswg.org/css-contain-3/#container-queries">
<link rel="match" href="pseudo-elements-002b-ref.html">
<style>
.container { container-type: inline-size; }
@container (max-width: 300px) { #c5::first-letter { color: green } }
@container (max-width: 300px) { #c6::first-letter { color: green } }
@container (min-width: 400px) { #c7::first-letter { color: green } }
@container (min-width: 400px) { #c8::first-letter { color: green } }
@container (max-width: 300px) { #c9::first-line { color: green } }
@container (max-width: 300px) { #c10::first-line { color: green } }
@container (min-width: 400px) { #c11::first-line { color: green } }
@container (min-width: 400px) { #c12::first-line { color: green } }
#c13::first-line { color: red }
@container (min-width: 400px) { #c13::first-line { color: green } }
@container (min-width: 400px) { #c14::first-line { color: green } }
</style>
<div class="container" style="width:400px">
<div id="c5" class="container" style="width:300px">PASS if P is green.</div>
</div>
<div class="container" style="width:400px">
<div id="c6" class="container" style="width:400px">PASS if P is green.</div>
</div>
<div id="c7" class="container" style="width:400px">
<div class="container" style="width:300px">PASS if P is green.</div>
</div>
<div id="c8" class="container" style="width:300px">
<div class="container" style="width:300px">PASS if P is green.</div>
</div>
<div class="container" style="width:400px">
<div id="c9" class="container" style="width:300px">PASS if text is green.</div>
</div>
<div class="container" style="width:400px">
<div id="c10" class="container" style="width:400px">PASS if text is green.</div>
</div>
<div id="c11" class="container" style="width:400px">
<div class="container" style="width:300px">PASS if text is green.</div>
</div>
<div id="c12" class="container" style="width:300px">
<div class="container" style="width:300px">PASS if text is green.</div>
</div>
<div id="c13" class="container" style="width:300px">PASS if text is green.</div>
<div id="c14" class="container" style="width:300px">PASS if text is green.</div>
<script>
document.body.offsetTop;
c6.style.width = "300px";
c8.style.width = "400px";
c10.style.width = "300px";
c12.style.width = "400px";
c13.style.width = "400px";
c14.style.width = "400px";
</script>
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