title: Application not picking up .css file (flask/python)
body: <p>I am rendering a template, that I am attempting to style with an external style sheet. File structure is as follows.</p>
  
  <pre><code>/app
      - app_runner.py
      /services
          - app.py 
      /templates
          - mainpage.html
      /styles
          - mainpage.css
  </code></pre>
  
  <p>mainpage.html looks like this</p>
  
  <pre><code>&lt;html&gt;
      &lt;head&gt;
          &lt;link rel= "stylesheet" type= "text/css" href= "../styles/mainpage.css"&gt;
      &lt;/head&gt;
      &lt;body&gt;
          &lt;!-- content --&gt; 
  </code></pre>
  
  <p>None of my styles are being applied though. Does it have something to do with the fact that the html is a template I am rendering? The python looks like this.</p>
  
  <pre><code>return render_template("mainpage.html", variables..)
  </code></pre>
  
  <p>I know this much is working, because I am still able to render the template. However, when I tried to move my styling code from a "style" block within the html's "head" tag to an external file, all the styling went away, leaving a bare html page. Anyone see any errors with my file structure?</p>