span.ms-rteElement-mxContentLoad
{
	-ms-name: "Ajax Content Load";
	padding: 2px;
	margin-left: 3px;
	margin-right: 3px;
	overflow: hidden;
	background-color: #a2006f;
	color: #fff;
    display: none;
}
.ms-rte-stylePreviewBox span[class="ms-rteElement-mxContentLoad"]
{
    display: block;
}

.ms-rtestate-write span[class="ms-rteElement-mxContentLoad"]
{
	background-color: #a2006f;
	color: #fff;
	display: inline-block;
}