Thanks for the response Steve 

I am thinking of using polymer in our application going forward, We have 
got a css framework for our existing so this is very useful to know before 
jumping in :)

Regards

Dan 

On Friday, 23 May 2014 17:30:36 UTC+1, Steve Orvell wrote:
>
> Oops, mistakenly hit send there (darn gmail). I meant to say, this is 
> correct. 
>
> Polymer provides an approximation shim for the style encapsulation 
> ShadowDOM provides, and what you're seeing is one negative side effect: 
> styles leak 'in' to polyfilled shadowRoot's. Unfortunately, polyfilling 
> styles correctly would make performance unacceptable.
>
> As a result, on polyfilled platforms, you'll need to take care to use 
> selectors that do not leak into polyfilled shadowRoots.
>
>
> On Fri, May 23, 2014 at 9:23 AM, Steve Orvell <[email protected]<javascript:>
> > wrote:
>
>>  Is it something todo with chrome implementing shadow dom polymer filling 
>>> in for the other browsers?
>>
>>
>> That's correct.  
>>
>>
>> On Fri, May 23, 2014 at 9:21 AM, <[email protected] 
>> <javascript:>>wrote:
>>
>>> I have been furthering my investigations into polymer so far so good but 
>>> I have been thrown a little sideways,
>>> To my knowledge styles cannot bleed out of a custom element and 
>>> applyAuthorStyles is now deprecated so styles cannot bleed in unless using 
>>> ::shadow / deep piercings.
>>>
>>> This is the case with chrome but testing with Safari Firefox IE10 I get 
>>> different results the styles defined within my global css leak into my 
>>> custom elements. Is this the correct behaviour. Is it something todo with 
>>> chrome implementing shadow dom polymer filling in for the other browsers?
>>>
>>> Regards
>>>
>>> Da.
>>>
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>>
>

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