.my-drop-zone {
	border: dotted 3px lightgray;
}

.nv-file-over { /* Default class applied to drop zones on over */
	border: dotted 3px red;
} 
.another-file-over-class {
	border: dotted 3px green;
}

html, body {
	height: 100%;
}

canvas {
	background-color: #f3f3f3;
	-webkit-box-shadow: 3px 3px 3px 0 #e3e3e3;
	-moz-box-shadow: 3px 3px 3px 0 #e3e3e3;
	box-shadow: 3px 3px 3px 0 #e3e3e3;
	border: 1px solid #c3c3c3;
	height: 100px;
	margin: 6px 0 0 6px;
}