title: How can in achieve full background smoke effect in Javascript or CSS
body: <p>im trying to use this code:</p>
  
  <p><a href="http://codepen.io/MIML/pen/iBKyC" rel="nofollow">http://codepen.io/MIML/pen/iBKyC</a></p>
  
  <pre><code>canvas {
      position:absolute;
      margin-left : 50%;
      left: -150px;
  }
  </code></pre>
  
  <p>To put some smoke at the bottom of my page, but im searching how can i put it using 100% width! </p>
  
  <p>You know, all the bottom of my page, spreads smoke.</p>
  
  <p>Thanks.</p>