:root {
  /* Colors */
  --color: #27ae61;
  --bg-color: #f9f9f9;

  /* Borders and corners */
  --border-radius: 8px;
}

.lb-image-gallery {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  overflow: hidden;
}

.lb-image-gallery .photo-box {
  float: left;
  width: 33%;
  position: relative;
  border: none;
}

.lb-image-gallery a {
  display: inline-block;
  position: relative;
  margin: 5%;
}

.lb-image-gallery .photo-box img {
  display: block;
  /* width: 7rem; */
  width: 100%;
  max-width: 100%;	
  border-radius: var(--border-radius);
}

/*
.lb-image-gallery li {
  display: inline-block;
  padding: 2px;
  margin: 0 0.5rem 1rem 0.5rem;
  background-color: var(--bg-color);
  line-height: 0;
  border-radius: var(--border-radius);
}
*/

/*** IMMAGINE IN PRIMO PIANO E CON CAPTION-BOX A COMPARSA ***/
.lb-image-gallery .photo-box:hover {
  -webkit-transform: scale(1.1,1.1);
}

.lb-image-gallery .photo-box:not(:hover) {
   opacity: 0.6;
}

.lb-image-gallery .caption {
  overflow: hidden;
}

.lb-image-gallery .caption::after, 
                  .caption::before {
  position: absolute;
  top: 65%;
  width: 100%;
  height: 35%;
  content: attr(data-title);
  text-align: center;
  font-size: 1.5em;
  font-weight: bold;
  padding: 10%;
   -webkit-transition: -webkit-transform 0.3s ease-in-out; 
  -moz-transition: -moz-transform 0.3s ease-in-out; 
  transition: transform 0.3s ease-in-out;
  -webkit-transform: translateY(+100%);
  -moz-transform: translateY(+100%);
  transform: translateY(+100%); 
}

.lb-image-gallery .caption::after {
  color: #000;
  background-color: #000;
  border-radius: 0 0 var(--border-radius) var(--border-radius);
  opacity: 0.5;
  z-index: 1;
}

.lb-image-gallery .caption::before {
  color: #fff;
  z-index: 2;
}

.lb-image-gallery .caption:hover::after,
                  .caption:hover::before {
  -webkit-transform: translateY(0%);
  -moz-transform: translateY(0%);
  transform: translateY(0%);
}