title: Border width showing differently for different cells in Firefox
body: <p>I am dynamically generating table with around 55 rows and 15 columns. I have set boder width of columns to 1px like this</p>
  
  <pre><code>#tblId td
  {
      border:1px solid #616161;
      background-color:#EEEEEE;
  }
  </code></pre>
  
  <p>But for some cells it show border thicker than 1px!
  Here are the part of my table, you can see the difference in borders for upper columns and below columns </p>
  
  <p><img src="https://i.stack.imgur.com/tZmKG.png" alt="enter image description here"></p>
  
  <p><strong>Edit</strong></p>
  
  <p>Here is the fiddle <a href="http://jsfiddle.net/bz3Da/2/" rel="nofollow noreferrer">http://jsfiddle.net/bz3Da/2/</a></p>
  
  <p>That is really strange that it is looking good in the fiddle but not at my end, I checked no other classes are affecting the table.</p>