Board Thread:Support Requests - Getting Technical/@comment-35239236-20150516024257/@comment-17725354-20150516034534

You can do this by adding and setting the  attribute on the header to 0. In this case, {| cellspacing="0" style="float: right; margin: 0 0 0.5em 1em; padding: 2px 5px; width:350px; position:right" ! colspan="2" style="padding: 3px; margin: 0px; background-color: #FFA600; border: 1px solid #FFA600" |

Note: This will remove the space between all the table cells

See also: http://stackoverflow.com/questions/18920005/remove-space-between-table-row