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a::after {
content: " (" attr(href) ")";
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<h1>The content Property</h1>
<p>The content property is used to insert generated content.</p>
<p>Look at our:</p>
<p>
<a href="https://www.w3schools.com/css/">CSS Tutorial</a><br>
<a href="https://www.w3schools.com/cssref/">CSS Reference</a>
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