title: Meteor: body backgroundimage
body: <p>I have a Meteor project with different Routes.</p>
  
  <p>In one of my css files there is:</p>
  
  <pre><code>body {
      font-family: 'Roboto', sans-serif;
      font-size: 17px;
      font-weight: 400;
      color: #888;
      background-image: url("/images/bg.png");
      line-height: 30px;
      text-align: center;
  }
  </code></pre>
  
  <p>Now I want a different background image for my body when I go to a different Route and render different templates.
  Is there a Meteor-way solution to handle this?
  I know jQuery and this is not what I want, so please no non-reactive stuff, thanks.</p>
  
  <p>Is it possible to define a global helper for my body like</p>
  
  <pre><code>&lt;body class="{{classWithDifferentBackground}}"&gt;
  </code></pre>
  
  <p>which returns the right class for each route in a reactive way? So that I could have my different CSS-classes handle the backgroundimage for the body...</p>
  
  <p>Thanks for your help and thoughts on this!</p>