title: colors not showing at print
body: <p>how can i do so that when printing my html page it keeps the colors (print to pdf)</p>
  
  <pre><code>&lt;table class="table table-responsive table-striped"&gt;
          &lt;thead&gt;
              &lt;tr&gt;
                  &lt;th&gt;Elev&lt;/th&gt;
                  &lt;th&gt;Session navn&lt;/th&gt;
                  &lt;th&gt;Spørgsmål&lt;/th&gt;
                  &lt;th&gt;Svar&lt;/th&gt;
                  &lt;th&gt;Rigtigt svar&lt;/th&gt;
                  &lt;th&gt;Dato&lt;/th&gt;
              &lt;/tr&gt;
          &lt;/thead&gt;
          &lt;tbody&gt;
                  &lt;tr class="success"&gt;
                          &lt;td&gt;test&lt;/td&gt;
                          &lt;td&gt;testing&lt;/td&gt;
                          &lt;td&gt;test&lt;/td&gt;
                          &lt;td&gt;test&lt;/td&gt;
                          &lt;td&gt;test&lt;/td&gt;
                          &lt;td&gt;test&lt;/td&gt;
                  &lt;/tr&gt;
          &lt;/tbody&gt;
          &lt;tfoot&gt;
              &lt;tr&gt;
                  &lt;td colspan="5"&gt;
                      &lt;button class="btn btn-block btn-default" onclick="deactivate"&gt;Deaktiver&lt;/button&gt;
                  &lt;/td&gt;
                  &lt;td style="text-align:right"&gt;#3&lt;/td&gt;
              &lt;/tr&gt;
          &lt;/tfoot&gt;
      &lt;/table&gt;
  </code></pre>
  
  <p>the idea is that i get the data from my database, and gets displayed in the table above. if the row is correct then it turns green by adding the success class to the row. and danger if its wrong (red and green).</p>
  
  <p>this is beeing displayed great when just browsing the webpage. how ever when i try to print it. then the background colorering is off. how can i fix this?</p>