Why Don\'t Filters Work on Pseudo Elements in IE8?

Filter Gradients Not Working on Pseudo Elements in IE8

Problem Statement:
Creating 3D-like buttons with pseudo elements and filter gradients in IE8.

Main Question:
Why don't filters work on pseudo elements in IE8?

Background Information:

• Using conditional comments to handle different browser versions.
• IE8 does not support filter gradients on pseudo elements.

Updated Problem Statement:
Filters are not applied to CSS-generated content, despite not being explicitly mentioned in MSDN documentation.

Solution in IE8:
Apply filters to conditional elements as done for IE7.

Remaining Question:
Why do filters specifically not work on pseudo elements in IE8?

Possible Answer:

• Gradient filters are "procedural surfaces" that require an object containing content.
• Pseudo elements generate content, not objects containing content.
• Therefore, there is no suitable object between which to apply the filter.

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