*{
	margin: 0;
	padding: 0;
}

#contenedor{
	width: 50%;
	margin: auto;
}

#caja{
	position: absolute;
	width: 100%;
	margin: auto;
	height: 0px;
	background: #86959e;
	box-shadow: 10px 10px 3px #D8D8D8;
	opacity: 0.6;
	transition: height .4s;
	z-index: 999;
}

#caja:hover{
	opacity: 1;
	background: #f7a90a;
}

#boton{
	padding: 10px;
	width: 95px;
	cursor: pointer;
	margin-top: 10px;
	margin-bottom: 10px;
	opacity: .5;
	filter: alpha(opacity=50);
	display: none;
}

#boton:hover{
	opacity: 1;
	filter: alpha(opacity=100);
}

#boton2{
	padding: 10px;
	width: 95px;
	cursor: pointer;
	margin-top: 10px;
	margin-bottom: 10px;
	opacity: .5;
	filter: alpha(opacity=50);
	display: none;
}

#boton2:hover{
	opacity: 1;
	filter: alpha(opacity=100);
}