twitter/bootstrap — pull request #8320 by ramirovjr (2013-06-26 23:11:24+00:00)
Title: Adding a way for the user to add a custom CSS class to the Modal backdrop

This pull enables the user to add a custom CSS class to the Modal backdrop by simply adding the attribute:

data-modal-backdrop-custom

to the modal element (DIV)

Ex.:

```html

```