title: Angular add custom .css files to Angular-CLI project
body: <p>I'm adding existing .js and .css files to an Angular 4 app which uses angular-cli 1.0.6. Until a recent upgrade, I was simply referencing them in index.html--I know that's 'wrong' but it worked for my current needs.</p>
  
  <p>After a recent update, I'm getting 404s for everything I've tried. I have managed to add the JavaScript file by adding it to angular-cli.json and then importing it into a component. That's working, but the same isn't working for the .css file.</p>
  
  <p>I've tried it in index.html: <code>&lt;link rel="stylesheet" type="text/css" href="/scripts/test.css"&gt;</code>
  I've tried in the component's template: <code>&lt;link rel="stylesheet" type="text/css" href="../../../app/scripts/test.css"&gt;</code>
  And I've tried adding it the to styles in the component: <code>styleUrls: ['../edit.scss', '../../scripts/test.css'],</code></p>
  
  <p>I'm getting 404s for all of them even though the paths are valid (I can follow them in the editor).</p>
  
  <p>What's the correct way to do this?</p>