body {
  background-color:#111;
}

div.main {
  margin-left: 120px; /* Same as the width of the sidenav */
  font-size: 15px;
  background-color: #111;
  font-family: 'Arial';
  color: #818181; /* text color */
  margin-top: 30px;
}

div.scroll-container {
  /*padding-top: 30px;*/
}

div.scroll-container img {
  width: 80%;
  margin: 15px 0px 15px 0px;
}

div.vertical-center {
  margin: 0px;
  position: absolute;
  top: 50%;
  -ms-transform: translateY(-50%);
  transform: translateY(-50%);
}

div.sidenav {
  height: 100%;
  width: 120px;
  position: fixed;
  z-index: 10;
  top: 0px;
  left: 0px;
  background-color: #111;
  overflow-x: hidden;
  margin-top: 20px;
  font-family: 'Arial';
}

div.sidenav a {
  margin: 6px 8px 6px 16px;
  text-decoration: none;
  font-size: 25px;
  color: #818181;
  display: block;
}

div.sidenav a:hover {
  color: #f1f1f1;
}

/*div.sidenav a:active {
  color: #f1f1f1;
}*/

div.logo {
  position: absolute;
  left: 4px;
  bottom: 20px;
}

figcaption {
  font-size: 10px;
}

div.grid-container {
  /*display: grid;*/
  /*grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));*/
/*  grid-template-columns: auto auto auto;
  grid-gap: 10px;
  grid-auto-flow: dense;
*/}

/*div.grid-item {
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  background-color: white;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}*/

/*div.grid-item:nth-child(4n+1) {
    grid-row: span 2;
}

div.grid-item:nth-child(5n) {
    grid-column: span 2;
}*/

.row {
  display: -ms-flexbox; /* IE10 */
  display: flex;
  -ms-flex-wrap: wrap; /* IE10 */
  flex-wrap: wrap;
  /*padding-bottom: 8px;*/
}

/* Create three equal columns that sits next to each other */
.column {
  -ms-flex: 30%; /* IE10 */
  flex: 30%;
  max-width: 30%;
  margin-right: 8px;
}

.column img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  margin-top: 8px;
}

/* Responsive layout - makes a two column-layout instead of four columns */
@media screen and (max-width: 800px) {
  .column {
    -ms-flex: 40%;
    flex: 40%;
    max-width: 40%;
  }
}

/* Responsive layout - makes the two columns stack on top of each other instead of next to each other */
@media screen and (max-width: 600px) {
  .column {
    -ms-flex: 100%;
    flex: 100%;
    max-width: 100%;
  }
}