title: Can't edit HTML in Chrome dev tools Sources tab
body: <p>I have a noob question about the Sources panel in dev tools: when in the Elements tab I see my CSS to the right. I click on a CSS file and am brought to the Sources tab where I can make live edits. 
  I can bring up the JS and do the same, but...
  If I bring up the HTML file, I am unable to make any edits to the HTML. Why is this? Is this by design? What am I missing?</p>