* {
  box-sizing: border-box;
}

body {
  margin: 0;
}

/* Style the header */
.header {
  background-color: #f1f1f1;
  padding: 10px;
  text-align: center;
  font-size: 30px;
}

/* Style the top navigation bar */
.topnav {
  overflow: hidden;
  background-color: #333;
}

/* Style the topnav links */
.topnav a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

/* Change color on hover */
.topnav a:hover {
  background-color: #ddd;
  color: black;
}

/* Create 3 equal columns that floats next to each other */
.column {
	float: left;
	width:33.33%;
	padding: 15px;
	text-align: left;
}

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

/* Responsive layout - makes 3 columns stack on top of each other.*/
@media screen and (max-width: 600px) {
	.column {
		width: 100%;
}
}

/* Style the footer.*/
.footer {
	background-color:#f1f1f1;
	text-align: center;
}