* {
  box-sizing: border-box;
}

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

a { text-decoration: none; }

span {  cursor: pointer; }

/* Style the header */
header {
  background-color: white;
  padding: 5px;
  text-align: center;
  font-size: 2vw;
  color: black;
}

/* Create two columns/boxes that floats next to each other */
nav {
  float: left;
  width: 20%;
  height: 100wh;
  background: #e6faff;
  padding: 20px;
  font-size: 10pt;
  word-wrap: break-word;
}

/* Style the list inside the menu */
nav ul {
  list-style-type: none;
  padding-left: 0pt;
}

nav li {
	padding-bottom: 0pt;
}

article {
  float: left;
  padding: 20px;
  width: 80%;
  background-color: white;
}

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

/* Style the footer */
footer {
  background-color: #777;
  padding: 1px;
  text-align: center;
  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;
  }
}