What is this weird white border that's appearing around my HTML input submit button?

Question

Here's a screenshot.

And my CSS markup:

.submitbutton
{
    background: url("/Content/SiteImages/button.png") no-repeat scroll 0 0 transparent;
    color: white;
    cursor: pointer;
    height: 26px;
    width: 76px;
    margin-left: 8px;
    margin-top: 12px;
}

Also, I'd like the background image to stretch to fit into the dimensions of the button. Currently it's displaying full size (I think). Any tips for this new HTML web developer?

Answer 1

HTML buttons always have a border, simply setting border:0; should fix this.