.gallery{
  margin: 0;
  padding: 0;
  height: 100%;
}

[class*='thumbnail-']{
  background: #f3f3f3;
  width: 25%;
  /*height: 215px;*/
  float: left;
  padding: 5px 5px 3px 5px;
}

@media(max-width: 480px){
  [class*='thumbnail-']{
  background: #f3f3f3;
  width: 100%;
  /*height: 215px;*/
  float: inherit!important;
  padding: 5px 5px 3px 5px;
  margin-bottom: 9px;
}
}

[class*='thumbnail-'] img{
  max-width: 100%;
}

[class*='large-']{
  background: #000;
  width: 90%;
  margin: 0 auto;
  padding: 30px;
  display: none;
}

[class*='large-'] img{
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
}

.prev{
  color: #fff;
  font-size: 60px;
  position: absolute;
  top: 45%;
  left: 10px;
  float: left;
}

.next{
  color: #fff;
  font-size: 60px;
  position: absolute;
  top: 45%;
  right: 10px;
  float: right;
}

.close{
  color: #fff;
  font-size: 30px;
  position: absolute;
  top: 5px;
  right: 10px;
  float: right;
  cursor: zoom-out;
}

[class*='thumbnail-'] {
    overflow: hidden;
    padding: 0;
    position: relative;
    cursor: pointer;
    height: 25rem;
}


[class*='thumbnail-'] > .caption{
  display: none;
  position: absolute;
  bottom: 0;
  padding: 15px;
  width: 100%;
  background-color: black;
  color: white;
  opacity: 0.8;
}

[class*='thumbnail-']:hover > .caption{
  display: block;
 
}

@media screen and (max-width:480px){
  .caption h3{
    font-size: 12px;
  }
}