* {
  box-sizing: border-box;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 1vw;
}

/* Style the header */
header {
  background-color: #717d70;
  padding: 30px;
  text-align: center;
  font-size: 2vw;
  color: #18181a;
}

/* Create two columns/boxes that floats next to each other */
nav {
  float: left;
  width: 27.5%;
  background: #717d70;
  padding: 10px;
}

/* menuitems in bestandenlijst */
nav dl {
  list-style-type: none;
  padding: 0;
  line-height: 1.5;
  color: #d1dbc4;
}

/* spreekuurtijden lijst */
.spreekuurtijden {
  font-family: "Lucida Console", "Courier New", monospace;
  list-style-type: none;
  padding: 10;
  line-height: 1.1;
  font-size: 0.9vw;
  color: #d6d6d6;
}

nav p  {
  line-height: 1.1;
  font-size: 0.9vw;
  color: #d6d6d6;
}

article {
  float: left;
  padding: 20px;
  width: 72.5%;
  color: #d6d6d6;
  background-color: #32332f;
  line-height: 1.3;
}

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

/* Style the footer */
footer {
  background-color: #717d70;
  padding: 10px;
  text-align: center;
  font-size: 0.8vw;
  line-height: 1;
  color: white;
}

/* Responsive layout - makes the two columns/boxes stack on top of each other instead of next to each other, on small screens */
@media (max-width: 600px) {
  nav, article {
    width: 100%;
    height: auto;
  }
}

a:link {
  color: #cbdebe;
  background-color: transparent;
  text-decoration: none;
}

a:visited {
  color: #cbdebe;
  background-color: transparent;
  text-decoration: none;
}

a:hover {
  color: red;
  background-color: transparent;
  text-decoration: none;
}

a:active {
  color: red;
  background-color: transparent;
  text-decoration: none;
}

/* antwoord box in vraag en antwoord */
.antwoord {
  background-color: #717d70;
  line-height: 1;
  width: 95%;
  height: 45px;
  border: 1px black;
  overflow-x: hidden; /* Hide horizontal scrollbar */
  overflow-y: scroll; /* Add vertical scrollbar */
}