I have an image with a background image and there is a gray border around it that I can't seem to remove. Setting the border to 0px doesn't work.
Here is a fiddle where you can see my code: Fiddle Link
.facebook {
background: url(http://dev.truewarpit.com/play/wp-content/themes/FoundationPress-master/img/icons/facebook.png);
background-size: 50px 50px;
border: 0px;
width: 50px;
height: 50px;
}
<img class="facebook" alt="Facebook Logo" />