.vistaprevia{
	background-color: black;
	color: white;
	font-size: 12px;
	padding: 5px;
	border-radius: 5px;
	position: relative;
	margin-top: -3px;
	top:-5px;
	margin-left: 5px;
	opacity: 0.3;
	cursor: not-allowed;
}
.vistaprevia:hover{
	color: gray;
}