title: How do I increase the cell width of the ipython notebook in my browser? (Both Python 2 and 3)
body: <p>I followed the instructions in <a href="https://stackoverflow.com/questions/21971449/how-do-i-increase-the-cell-width-of-the-ipython-notebook-in-my-browser">this post</a>
  and they worked like a charm... for Python 2. But not for Python 3.</p>
  
  <p>I'm running Anaconda on Windows. To activate Python 2 from the command prompt I type</p>
  
  <pre><code> activate python2
  </code></pre>
  
  <p>So, when I type</p>
  
  <pre><code> jupyter notebook
  </code></pre>
  
  <p><i>after</i> having activated Python 2, the Jupyter notebook that pops up is affected by my <b>custom.css</b> file (and it runs Python 2). But if I start the Jupyter notebook <i>without</i> having activated Python 2 (which results in the Jupyter Notebook running Python 3), the notebook looks the default way. What can I do?</p>