* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

-main {
	background: #fdfdfd;  /* colore dello sfondo dietro l'accordion */
}

.ia-container {
	width: 1200px; /*  MOLTO IMPORTANTE - larghezza foto + (50px x numero foto meno uno) - ESEMPIO: 950px + (50px x (6-1)) = 950px + 250px = 1200px   */
	margin: 20px auto;
	overflow: hidden;
	box-shadow: 2px 2px 6px rgba(0,0,0,0.3);
	border: 7px solid rgba(255,255,255,0.9);    /* spessore e colore del bordo dell'accordion */
}

.ia-container figure {
    position: absolute;
	top: 0;
	left: 50px;     /* larghezza striscia visibile delle foto dietro */
	width: 950px;      /* larghezza foto */
    box-shadow: 0 0 0 1px rgba(255,255,255,0.6);
	-webkit-transition: all 0.3s ease-in-out;
    -moz-transition: all 0.3s ease-in-out;
    -o-transition: all 0.3s ease-in-out;
    -ms-transition: all 0.3s ease-in-out;
    transition: all 0.3s ease-in-out;
}

.ia-container > figure {
    position: relative;
	left: 0 !important;
}

.ia-container img {
	display: block;
	width: 100%;
}

.ia-container input {
	position: absolute;
	top: 0;
	left: 0;
	width: 50px; 
	height: 100%;
	cursor: pointer;
	border: 0;
	padding: 0;
    -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
    filter: alpha(opacity=0);
    opacity: 0;
	z-index: 100;
	-webkit-appearance: none;
	-moz-appearance: none;
	appearance: none;
}
.ia-container input:checked{
	width: 5px;
	left: auto;
	right: 0px;
}
.ia-container input:checked ~ figure {
	-webkit-transition: all 0.7s ease-in-out;
    -moz-transition: all 0.7s ease-in-out;
    -o-transition: all 0.7s ease-in-out;
    -ms-transition: all 0.7s ease-in-out;
    transition: all 0.7s ease-in-out;
	left: 950px; /*larghezza foto*/
}

.ia-container figcaption {
	width: 100%;
	height: 100%;
	background: rgba(87, 73, 81, 0.1); /* colore e trasparenza delle immagini poste dietro */
	position: absolute;
	top: 0px;
	-webkit-transition: all 0.2s linear;
    -moz-transition: all 0.2s linear;
    -o-transition: all 0.2s linear;
    -ms-transition: all 0.2s linear;
    transition: all 0.2s linear;
}

.ia-container figcaption span {     /* stile delle didascalie */
	position: absolute;
	top: 40%;
	margin-top: -30px;
	right: 20px;
	left: 20px;
	overflow: hidden;
	font-family: Montserrat;    /* testo delle didascalie */
	font-size: 1.5em;
	line-height: 1.5em;
	text-align: center;
	text-transform: uppercase;
	letter-spacing: 4px;
	font-weight: 700;
	background: rgba(87, 73, 81, 0.5); /* colore e trasparenza dello sfondo della didascalia */
	-ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
    filter: alpha(opacity=0);
    opacity: 0;
	padding: 20px;
	color: #fff;   /* colore del testo delle didascalie */
	text-shadow: 1px 1px 1px rgba(0,0,0,0.1);
} 

.ia-container input:checked + figcaption,
.ia-container input:checked:hover + figcaption{
	background: rgba(87, 73, 81, 0);
}

.ia-container input:checked + figcaption span {
	-webkit-transition: all 0.4s ease-in-out 0.5s;
    -moz-transition: all 0.4s ease-in-out 0.5s;
    -o-transition: all 0.4s ease-in-out 0.5s;
    -ms-transition: all 0.4s ease-in-out 0.5s;
    transition: all 0.4s ease-in-out 0.5s;
	
	-ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=99)";
    filter: alpha(opacity=99);
	opacity: 1;
	
	top: 50%;
}

.ia-container #ia-selector-last:checked + figcaption span {
	-webkit-transition-delay: 0.3s;
	-moz-transition-delay: 0.3s;
	-o-transition-delay: 0.3s;
	-ms-transition-delay: 0.3s;
	transition-delay: 0.3s;
}

.ia-container input:hover + figcaption {
	background: rgba(87, 73, 81, 0.03);
}

.ia-container input:checked ~ figure input{
    z-index: 1;
}

@media screen and (max-width: 720px) {
    .ia-container { 
		width: 540px; 
	}
	
	.ia-container figure { 
		left: 40px; 
		width: 260px; 
	}
	
	.ia-container input { 
		width: 40px; 
	}
	
	.ia-container input:checked ~ figure { 
		left: 260px; 
	}
	
	.ia-container figcaption span { 
		font-size: 16px; 
	}
}

@media screen and (max-width: 520px) {
    .ia-container { 
		width: 320px; 
	}
	
	.ia-container figure { 
		left: 20px; 
		width: 180px; 
	}
	
	.ia-container input { 
		width: 20px; 
	}
	
	.ia-container input:checked ~ figure { 
		left: 180px; 
	}
	
	.ia-container figcaption span { 
		font-size: 12px; 
		letter-spacing: 2px; 
		padding: 10px; 
		margin-top: -20px; 
	} 

}