css “background-image” shows unwanted border, img “src” does not

Question

Getting started with Twitter Bootstrap, I ran into a strange problem of which I can\'t figure out the cause.

When I render an image using:

Answer 1

using the image as a background. Why not set it as the src property of the button

When you set the type as image the input expects an src attribute as well..

Reference: http://www.w3.org/TR/html401/interact/forms.html#adef-src and http://www.w3.org/TR/html401/interact/forms.html#h-17.4.1