.contenedor > .columna {
  	float:left;
	display:inline;
	font-size:1em;
  	border-radius: 4px;
	overflow: hidden;
	position: relative;
  	margin-bottom: 20px;
  	padding-top: 5px;
  	height: 400px;
}

.columna .portada {
	width: 150px;
	height: 217px;
	margin: auto;
	overflow: hidden;
  	/*margin-bottom: 20px;*/
  	padding: 0;
}
.columna .portada img {
	width: 100%;
	height: 100%;
}

.columna .detalles-columna {
	position: relative;
	display: inline-block;
  	width: 100%;
  	padding-left: 60px;
  	padding-right: 60px;
  	padding-top: 15px;
  	text-align: center;
}

@media only screen and (min-width: 1110px) {
	.contenedor {
		width:1140px;
		margin:0 auto;
	}
  div[class*='columna'] { 
		width:50%;
	}
}
 
@media only screen and (max-width: 1110px) and (min-width: 980px) {
	.contenedor { 
		width:960px;
		margin:0 auto;
	}
  
  div[class*='columna'] { 
		width:50%;
	}
}
 
@media only screen and (min-width: 768px) and (max-width: 979px) {
	.contenedor {
		width:720px;
		margin:0 auto;
	}

  	div[class*='columna'] { 
		width:50%;
	}
}
 
@media only screen and (max-width: 479px) {
	.contenedor {
		width:320px;
		margin:0 auto;
	}
	.columna .detalles-columna { 
		padding-left: 10px;
  		padding-right: 10px;
    	font-size:15px;
	}
  	div[class*='columna'] { 
		width:100%;
	}
}
 
@media only screen and (min-width: 480px) and (max-width: 767px) {
	.contenedor {
      width:480px;
      margin:0 auto;
  	}
	.columna .detalles-columna { 
		padding-left: 10px;
  		padding-right: 10px;
    	font-size: 15px;
	}
  	div[class*='columna'] { 
		width:100%;
    	font-size:1em;
	}
}