* {
  box-sizing: border-box;
}

/* Center website */
.main {
  margin: auto;
  max-width: 1500px;
}

h1 {
  margin-top: 50px !important;
  text-align: center !important;
}

img {
  width:100%; 
  cursor: pointer; 
  /*box-shadow: 5px 5px 5px 5px grey;*/
}

  img:hover {
    /*webkit-filter: blur(2px);*/ /* Chrome, Safari, Opera */
    /*filter: blur(2px);*/
    box-shadow: 3px 3px 3px 3px grey;
}

.row {
  margin: 8px -16px;
}

/* Add padding BETWEEN each column */
.row,
.row > .column {
  padding: 8px;
}

/* Create four equal columns that floats next to each other */
.column {
  float: left;
  width: 30%;
  margin-left: 30px;
}

/* Clear floats after rows */ 
.row:after {
  content: "";
  display: table;
  clear: both;
}

/* Content */
.content {
  background-color: white;
  padding: 10px;
}

/* Responsive layout - makes a two column-layout instead of four columns */
@media screen and (max-width: 900px) {
  .column {
    width: 45%;
  }
}

/* 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 {
    width: 90%;
  }
}