body {
  margin: 0;             /* Remove default margin */
  font-family: Arial, sans-serif;
  background-color: #f9f9f9; /* optional */
}

.frame {
  margin: 50px auto; /* 50px top & bottom, auto left & right centers horizontally */
  display: inline-block;
  border: 2px solid #9fff9f;
  background-color: #fff;
}

.header {
  background-color: #fff;
  text-align: center;
}

.column h2 {
  text-align: center;
}

.row {
}

.topnav {
  background-color: #fff;
  padding: 15px;
  box-sizing: border-box;
}

.topnav a {
  display: block;
  color: #9fff9f;
  padding: 5px;
  text-decoration: none;
}

.topnav a:hover {
  font-style: italic;
}

.column {
  background-color: #fff;
  width: 600px;
  padding: 15px;
  word-wrap: break-word;
  word-break: break-word;
}