title: Cytoscape.js Edge and Arrow Style
body: <p>How do I add directions to my edges?<br>
  How do I label my vertices?</p>
  
  <p>Right now I have:  </p>
  
  <pre><code>var cy = cytoscape({
          container: document.getElementById('cy'),
          elements: graph_to_elements(graph),
          style: 'node { background-color: blue; }'
        });
  </code></pre>
  
  <p>graph is vertices and edges.<br>
  graph_to_elements is a function that graphs the inputted graph.</p>
  
  <p>What other things can I add to style? When I tried adding different properties it would not work. </p>