title: Include css stylesheet in electron app
body: <p>I created a style.css file. To include it in a .html file I tried :</p>
  
  <pre><code>&lt;link rel="stylesheet" href="https://github.com/karinakozarova/HealthCalc/blob/master/style.css"&gt;
  </code></pre>
  
  <p>and</p>
  
  <pre><code>&lt;base href="/style.css"&gt;
  </code></pre>
  
  <p>and</p>
  
  <pre><code>&lt;href="/style.css"&gt;
  </code></pre>
  
  <p>None of them seem to work. Any ideas how to add CSS to my app via external file will be appreciated.</p>