title: Inject CSS with chrome developer tool?
body: <p>Where can I add CSS to the page I'm viewing? I don't want to add style to one element directly, I want to add a 'document' to a page to debug changes before editing the site's style.css.</p>
  
  <p>Note, there are lots of questions here about 'injecting CSS from a chrome extension', but specifically I want to do it via the 'Chrome Developer Tools' thingy.</p>