title: Use webcomponents in existing ASP.NET WebForms application
body: <p>I have an large existing ASP.NET WebForms application. This application has a masterpage who manager security, navigation, ...
  Pages developped are in a ContentPlaceHolder.</p>
  
  <p>I would like to develop new pages in JS with web components. To use a web component on a page, it must be imported (<code>&lt;link rel="import" href="..."&gt;</code>). This import must be on the <code>&lt;head&gt;</code> part of the page. In my case, the <code>&lt;head&gt;</code> is on the master page. So I have to import all the existing web components in the master page to be able to use them.</p>
  
  <p>It does not sound like a very good idea.</p>
  
  <p>How can I do it otherwise ?</p>