Styling View Field Title - Can not enable "Customize field and label wrapper HTML"

I am setting up a blog. I have developed several views to sort out the various types of articles “business, design, news, etc.” On the article page and in the teaser however I would like to stye the “content: title” field. As seen in the example below.

In the research I have done it sounds as though you can accomplish this by creating a wrapper class in the “style settings” options in that titles configuration menu.

Here is where I am having difficulty. When I select “Customize field and label wrapper HTML” for instance nothing happens. I am not able to the field where I should be able to enter my custom wrapper class. I have tried hitting “apply” then going back, I have applying the section and then saving the changes to the view, and I have tried applying saving and flushing the cache but with no result.

Is there a configuration some where that is preventing me from applying this option? Or am I doing something wrong. It is frustrating to no end any advice would be much appreciated thanks.