How to apply theme to Drupal view or block I have created 1 view for displaying Category on home page using Ubercart module.

but i want to apply custom css  changes to my Category view fields like image and title

can any knows how to apply css change to DRUPAL views.

Thanks in advance.
Go to your view display and look at the bottom of the "advanced" column. You'll see something like "Theme : Information". Try to locate your template name and click on it to get it's base code.