.header {
  background-color: #F1F1F1;
  text-align: center;
  padding: 20px;
}

.topnav {
  overflow: hidden;
  background-color: #333;
}

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

.topnav a:hover {
  background-color: #ddd;
  color: black;
}

.column {
  float: left;
  width: 33.33%;
}

.row:after {
  content: "";
  display: table;
  clear: both;
}

.footer {
  background-color: #F1F1F1;
  text-align: center;
  padding: 10px;
}

p {
  color: rgb(0, 0, 0);
  text-align: center;
  font-family: 'Courier New', Courier, monospace;
  font-size: 14px;
}

.column {
  float: left;
  width: 33.33%;
}

.row:after {
  content: "";
  display: table;
  clear: both;
}

@media screen and (max-width: 600px) {
  .column {
    width: 100%;
  }
}

.box {
  width: 400px;
  border: 1px solid black;
  padding: 10px;
  margin: 10px;
  background-color: darkgrey;
}

.divTable{
	display: table;
	width: 100%;
}
.divTableRow {
	display: table-row;
}
.divTableHeading {
	background-color: #EEE;
	display: table-header-group;
}
.divTableCell, .divTableHead {
	border: 1px solid #999999;
	display: table-cell;
	padding: 10px 10px;
}
.divTableHeading {
	background-color: #EEE;
	display: table-header-group;
	font-weight: bold;
}
.divTableFoot {
	background-color: #EEE;
	display: table-footer-group;
	font-weight: bold;
}
.divTableBody {
	display: table-row-group;
}