title: Comma in CSS, multiple selectors using the same CSS
body: <pre><code>.Resource table.Tbl td
  { /* some css*/ }
  
  .Resource table.Tbl td.num
  { /* some css 2*/ }
  
  .Resource table.Tbl td.num span.icon
  { /* some css 3*/ }
  
  .Resource table.Tbl2 td
  { /* some css*/ }
  
  .Resource table.Tbl2 td.num
  { /* some css 2*/ }
  
  .Resource table.Tbl2 td.num span.icon
  { /* some css 3*/ }
  </code></pre>
  
  <p>where the CSS for Tbl and Tbl2 should be the same.</p>
  
  <pre><code>.Resource table.Tbl, table.Tbl2 td { /* some css*/ }
  </code></pre>
  
  <p>doesn't work. </p>
  
  <p>How can I achieve this, without duplicating whole line?</p>