1. http://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.no-icons.min.css
  2. download the above file.And save it with the same name in your themes css folder.
  3.  
  4. And then go to pligg.tpl in your theme folder and change this line
  5. <link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.no-icons.min.css" rel="stylesheet">
  6. with
  7. <link rel="stylesheet" type="text/css" href="{$my_pligg_base}/templates/{$the_template}/css/bootstrap.no-icons.min.css" media="screen" />
  8.  
  9. Finally now go to the bootsrap.no-icons.min.css file which you saved in your css folder and edit the file and find these two col-md-9 and col-md-3 and change them accordingly and you're done.
  10.  
  11. Remember default values for col-md-9 is 75% and col-md-3 is 25% so you have to change them correctly and the total value should be 100%.
  12. col-md-9 is the content area so dont reduce it too much.
  13. col-md-3 is the sidebar area.