Consider, I have few elements which use Shadow DOM to hide their internal div-soup and layout.  Even tough they are different, they share the same CSS style sheet, as they are using the same set of elements that are supposed to be styled in consisten...
I'm trying to use paper-tabs inside new element (tabs-list) but after print tabs I can't use querySelector to change selected one.  Element code (without style):  <link rel="import" href="../components/polymer/polymer.html"...
I am using LitElement to create custom Web Components. I am fairly new at it and decided to try making image slideshow. I used W3Schools slideshow as reference while modifying it to work as LitElement.  The problem is, that when I am trying to use do...
I'm creating a polymer element. I've made the template and am now working on the script. For some reason document.querySelector is returning null for both class and id selectors. Not sure if this doesn't work with polymer (no reason it sh...
Context:  I am carrying out tests about web component composition in different contexts. Particularly I am trying to relate several web component by getting access to one of them from another one by a searching process within the DOM / Shadow DOM of...
I have studied Shadow DOM recently, and I was wondering what are the aims of using it instead of the main one.  What does it gives ? Why dont we use standard DOM instead of it (except for styling scoping) ?...
Is it possible to see if a Shadow DOM element exists? I'm not too concerned with manipulating it, or even really targeting it per-say. I understand the reasoning of the encapsulation. But I'd like to be able to style other elements in the reg...
There is already an answered question that explains the difference between ViewEncapsulation.Emulated, ViewEncapsulation.Native ad ViewEncapsulation.None.  Let's say there is Electron application that is guaranteed to be bundled with Chromium ver...
I've working with Bootstrap 3.1.1 and Polymer 0.2.4 for a long time and, suddenly -it may have been since the last Chrome auto-update (Version 35.0.1916.114)- Bootstrap stopped styling Shadow DOM elements. I've been able to check that the CSS...
I'm trying to use core-animation on a div, to animate its position. To do that, i have to select it with document.getElementById(). The problem is, i have a rather complex structure in my index.html file and i can't find a way to select that...

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