<style>
body {
  font-family: Verdana, sans-serif;
  margin: 0;

}


ul.topnav {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333;
}

ul.topnav li {float: left;}

ul.topnav li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

ul.topnav li a:hover:not(.active) {background-color: #111;}

ul.topnav li a.active {background-color: #FFFFFF;}

ul.topnav li.right {float: right;}

@media screen and (max-width: 600px){
    ul.topnav li.right, 
    ul.topnav li {float: none;}
}

* {
  box-sizing: border-box;
      
}

img {
  vertical-align: middle;
}

.row > .column {
   width: 260px;
   padding: 15px; 
}

.row:after {
  content: "";
  display: none;
  clear: both;
}

/* Six columns side by side */
.column {
  float: left;
  padding: 15px;
  width: 25%;
  
}

/* The Modal (background) */
.modal {
  display: none;
  position: fixed;
  padding-top: 100px;
  left: 0;
  top: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  overflow: visible;
  background-color: white;
}

/* Modal Content */
.modal-content {
  position: relative;
  margin: auto;
  padding: 0;
  width: 80%;
  max-width: 900px;
}

/* The Close Button */
.close {
  color: #339933;
  position: absolute;
  top: 10px;
  right: 25px;
  font-size: 25px;
  font-weight: bold;
}


.close:hover,
.close:focus {
  color: #cc99ff;
  text-decoration: none;
  cursor: pointer;
}

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

.cursor {
  cursor: pointer
}


/* Next & previous buttons */
.prev,
.next {
  cursor: pointer;
  position: absolute;
  top: 50%;
  width: auto;
  margin-top: -25px;
  padding: 9px;
  color: #e0e0eb;
  user-select: none;
  -webkit-user-select: none;
  
}

.prev:hover {
 opacity: 0.5;
 transition: .3s ease;
 }
 
.next:hover {
 opacity: 0.5;
 transition: .3s ease;

}

/* Position the "next button" to the right */
.next {
  right: 0;
  border-radius: 2px 0 0 2px;
}


.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)
}

}

/* Add a transparency effect for thumnbail images */
.demo {
  opacity: 0.6;
}

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


</style>