border-image

div.border {
border: 5px solid #feb515;
-moz-border-radius: 3px;
-webkit-border-radius: 3px;
-moz-border-image: url(border-image.png) 5 5 5 5 stretch;
-webkit-border-image: url(border-image.png) 5 5 5 5 stretch;
}

via ZURB – Behind the Scenes: Building the New Visual Annotations.