html {
    background: #ddd;
    
}

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

/* Style the links inside the navigation bar */
.topnav a {

  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

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

/* Add a color to the active/current link */
.topnav a.active {
  background-color: #4CAF50;
  color: white;
}

.div {
    width: 50%;
    background-color: #ddd;
    margin-top: 10px;
    padding: 5px;
    border-style: solid;
    border-width: 3px;
    border-color: #000000;
    
}

.weer {
      float: right;
}