#banner{
	margin-top: 50px;
	position:relative;
}

#banner img{
	width: 100%;
	height: 100%;
}
#banner .contenedor{
	position: absolute;
	top:50%;
	left: 55%;
	transform: translateX(-50%) translateY(-50%);
	color:#fff;
}
#banner h2{
	font-size: 28px;
}
#banner a {
	display: block;
	width: 100px;
	color:#fff;
	text-decoration: none;
	padding: 7px;
	margin-top: 10px;
	border: 3px solid #fff;
}
#banner a:hover {
	background: rgba(51,51,51,0.5);
}

@media (min-width: 480px){
	#banner h2{
		font-size: 35px;
	}
	
	#banner a{
		margin-top: 15px;
	}
}

@media  (min-width: 768px){
	#banner {
		height: 300px;/* tamaño de banner */
		overflow: hidden;
	}
	
	#banner img{
		height: auto;
		margin-top: -100px; /* acomoda la image para que se vea responsiva*/
	}
}

@media (min-width: 1024px){
	#banner img{
		margin-top: -200px;
	}
}