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Home/ Questions/Q 7773613
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Editorial Team
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Editorial Team
Asked: June 1, 20262026-06-01T17:10:17+00:00 2026-06-01T17:10:17+00:00

In my CSS files, I get these and similar error messages: The pseudo-element ::selection

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In my CSS files, I get these and similar error messages:

The pseudo-element ::selection can’t appear here in the context css2

Value Error : background-color (http://www.w3.org/TR/REC-CSS2/colors.html#propdef-background-color) RGBA(0,0,0,0.7) is not a background-color value

And similar errors for background-image. I keep reading that Aptana supports CSS3, but I can’t find anything on how to make it use that for validation instead of CSS2. I’ve checked Preferences -> Aptana -> Validation -> CSS, I’ve made sure I’m using the Aptana editor, checked file associations, and I can’t find any options for it. I just updated Aptana.

Here’s my Aptana version:
Aptana Studio 3 Plugin 3.0.9.201202140953-7E777Q7HFGVBKBSEW7S_Iz0JktqM com.aptana.feature.studio.feature.group

Here’s my Eclipse version:
Version: Helios Service Release 1
Build id: 20100917-0705

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1 Answer

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  1. Editorial Team
    Editorial Team
    2026-06-01T17:10:19+00:00Added an answer on June 1, 2026 at 5:10 pm

    It is not possible to change your CSS validation resources. You can find on the Aptana forums different posts of users that want to have a feauture. Please post a ticket at Aptana.

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