core-style css ^= selector not working in Firefox 33.1

[Average Joe Developer]

Hi, I have a core-style definition that I am including in a custom polymer element.  Inside the core-style definition, I have some CSS that tries to apply based on if an attribute starts with a certain prefix or contains a certain string:

[class^="myprefix-"], [class*=" myprefix-"] {
   font-size: 16px;
   color: #0071C5;
}

This works perfect in Chrome, but in Firefox the ^ symbol seems to be stripped from the CSS when the core-style is parsed and placed inline in my element's shadow dom. Instead, I see that it translates to the following when I used the "Style Editor" in Firefox to look at the inline CSS.  If I manually add the ^ in the Style Editor, the CSS renders as expected in the page.

my-custom-element[class="myprefix-"], my-custom-element [class*=" myprefix-"] {

font-size: 16px; color: rgb(0, 113, 197);

}

Has anyone else seen this type of behavior?

Thanks! 

[Eric Bidelman]

+Steve is this a bug in core-style?

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[litt.f...@gmail.com]

I'm having a similar issue I have this style inside my polymer element (not core-style):

            polyfill-next-selector { content: '> *' }

            ::content > * { margin: 1em 10px; }

That works as expected in Chrome, but not in Firefox 34.0.

[Eric Bidelman]

Try polyfill-next-selector { content: ':host > *' }

To view this discussion on the web visit https://groups.google.com/d/msgid/polymer-dev/e40e2592-da19-4429-a425-990227c7a0ee%40googlegroups.com.

[Andre Engelbrecht]

Thank you that was indeed the problem. I'll need to remember that :host is required in future :)