* {
  box-sizing: border-box;
}
/* ######CONTROLLARE INCOMPATIBILITA PRESENTI IN ALTRI FOGLI STILE######
body {
  background-color: #f1f1f1;
  padding: 20px;
  font-family: Arial;
}*/
/* ######CONTROLLARE INCOMPATIBILITA PRESENTI IN ALTRI FOGLI STILE######*/
/* Center website 
.main {
  max-width: 1000px;
  margin: auto;
}*/
/* ######CONTROLLARE INCOMPATIBILITA PRESENTI IN ALTRI FOGLI STILE######
h1 {
  font-size: 50px;
  word-break: break-all;
}*/
/* ######CONTROLLARE INCOMPATIBILITA PRESENTI IN ALTRI FOGLI STILE######*/
.row_portfolio {
  margin: 8px -16px;
	
  padding: 20px;
}
/* ######CONTROLLARE INCOMPATIBILITA PRESENTI IN ALTRI FOGLI STILE######*/
/* Add padding BETWEEN each column */
.row_portfolio,
.row_portfolio > .column {
  padding: 8px;
}

/* Create four equal columns that floats next to each other */
.column {
  float: left;
  width: 25%;
}

/* Clear floats after rows */ 
.row_portfolio:after {
  content: "";
  display: table;
  clear: both;
}

/* Content */
.content {
  background-color: white;
  padding: 10px;
	
  background-color: #f1f1f1;
}

/* Responsive layout - makes a two column-layout instead of four columns */
@media screen and (max-width: 900px) {
  .column {
    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 {
    width: 100%;
  }
}