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    <p>The question is "Why don't filters work on pseudo elements in IE8?" The following is as close to a definitive answer as I can muster. It comes from the information on <a href="http://msdn.microsoft.com/en-us/library/ms532853%28v=vs.85%29.aspx">this page</a>. </p> <p>The <code>gradient</code> filter is a "procedural surface" (along with <code>alphaimageloader</code>). A procedural surface is defined so:</p> <blockquote> <p>Procedural surfaces are colored surfaces that display between the content of an object and the object's background.</p> </blockquote> <p>Read that carefully. It is essentially another "layer" you might say between the content of an object and that object's background. Do you see the answer to the question? What is created by <code>:before</code> and <code>:after</code>... Yes! <em>Content</em>. Specifically as <a href="http://msdn.microsoft.com/en-us/library/cc304078%28v=vs.85%29.aspx">MSDN notes</a>:</p> <blockquote> <p>The ::before and ::after pseudo-elements specify the location of content before and after an element in the document tree. The content attribute, in conjunction with these pseudo-elements, specifies what is inserted.</p> <p>The generated content interacts with other boxes as if they were real elements inserted just inside their associated element.</p> </blockquote> <p>Now, if it is <em>content</em> that is generated, then it is <em>not</em> an "object" containing content, but the <em>content itself</em> (which happens to have some behavior similar to an element object that might contain content).</p> <p>Thus, there is no "object" <em>containing</em> "content" (since it <em>is</em> content) between which the <code>filter</code> can place a procedural surface for content generated by a pseudo-element (i.e. "false element"). A <code>gradient</code> must be applied to the <em>object</em>, and then the procedural surface is placed between it and the content.</p>
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    1. POWhy does a filter gradient on a pseudo element not work in IE8?
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    1. COI noticed MSDN interchangeably use the words 'property' and 'attribute' to describe `content`. Okay.
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    2. COI think, you are right.
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      1. USVladimir Starkov
    3. CO@matmuchrapna--Well, there is probably no way to prove or not that my explanation is truly the reason, but as I read the information it sure seemed like the most logical conclusion to me. I'm glad you agree and satisfied your quest for an answer.
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