.gallery-row {
  padding: 30px 0;
}

.gallery-row > .gallery-column {
  padding: 4px 8px;
}

.gallery-row:after {
  content: "";
  display: table;
  clear: both;
}

/* Create four equal columns that floats next to eachother */
.gallery-column {
  float: left;
  width: 20%;
}

@media only screen and (min-width: 120px) and (max-width: 720px) {
.gallery-column {
  clear: both;
  width: 100%;
}
}

/* The Modal (background) */
.modal {
  display: none;
  position: fixed;
  z-index: 99999999;
  padding-top: 30px;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: black;
}

/* Modal Content */
.modal-content {
  position: relative;
  background-color: #fefefe;
  margin: auto;
  padding: 0;
  width: 90%;
  max-width: 1200px;
}

/* The Close Button */
.close {
  color: white;
  position: absolute;
  top: 5px;
  right: 25px;
  font-size: 35px;
  font-weight: bold;
}

.close:hover,
.close:focus {
  color: #999;
  text-decoration: none;
  cursor: pointer;
}

/* Hide the slides by default */
.mySlides {
  display: none;
}

/* Next & previous buttons */
a.prev,
a.next {
cursor: pointer;
  position: absolute;
  top: 50%;
  width: auto;
  padding: 16px;
  margin-top: -50px;
  color: white;
  font-weight: bold;
  font-size: 4.2em;
  transition: 0.6s ease;
  border:none;
  background-color: rgba(0, 0, 0, 0.4);
}

/* Position the "next button" to the right */
.next {
  right: 0;
}

/* On hover, add a black background color with a little bit see-through */
.prev:hover,
.next:hover {
  background-color: rgba(0, 0, 0, 1);
  border:none;
}

/* Number text (1/3 etc) */
.numbertext {
  color: #f2f2f2;
  font-size: 12px;
  padding: 8px 12px;
  position: absolute;
  top: 0;
}

/* Caption text */
.caption-container {
  text-align: center;
  background-color: black;
  padding: 2px 16px;
  color: white;
}

img.demo {
  opacity: 0.6;
}

.active,
.demo:hover {
  opacity: 1;
}

img.hover-shadow {
  transition: 0.3s;
}

.hover-shadow:hover {
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}