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$("div:not(:has(h1))").css("background-color","yellow");
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<h1>This is a heading (h1)</h1>
<p>This is a paragraph.</p>
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<h2>This is a heading (h2)</h2>
<p>This is a paragraph.</p>
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<h3>This is a heading (h3)</h3>
<p>This is a paragraph.</p>
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