www.factorynet.es/index.php?option=com_content&view=article&id=6&Itemid=5
this is the website that continues the table and the type of widget is darkhive model.
Regarding the need colunma would resize all included in the table, each coupled to a size not exceeding the full width of the table.
As for the css file that changed is not one of the source file of the application. from the interface of your application generates a class for each colunma, then see the source code of the page and use Ari classes generated for each of the columns. The bad thing is I get to change other parameters, but not the width.