* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial;
}

.header {
  text-align: center;
  padding: 32px;
}

.row {
  display: -ms-flexbox; /* IE10 */
  display: flex;
  -ms-flex-wrap: wrap; /* IE10 */
  flex-wrap: wrap;
  padding: 0 4px;
}

/* Create four equal columns that sits next to each other */
.column {
  -ms-flex: 25%; /* IE10 */
  flex: 25%;
  max-width: 25%;
  padding: 0 4px;
}

.column img {
  margin-top: 8px;
  vertical-align: middle;
  width: 100%;
   transition: transform .6s;
}
.column img:hover
{
	  -ms-transform: scale(2.0); /* IE 9 */
  -webkit-transform: scale(2.0); /* Safari 3-8 */
  transform: scale(2.0);
}
/* Responsive layout - makes a two column-layout instead of four columns */
@media screen and (max-width: 800px) {
  .column {
    -ms-flex: 50%;
    flex: 50%;
    max-width: 50%;
  }
}

/* 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%;
  }
}
.i3
{
	background:url(../images/i12.jpg);
	background-position:center;
	background-repeat:no-repeat;
	background-size:cover;
	color:white;
	background-attachment:fixed;
	width: 100%; /* Full width */
    height: 500px; /* Fixed height */
}
.overlay2
{
	background-color:rgba(0,0,0,0.7);
	width:100%;
	height:500px;

}