ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  background-color: #f1f1f1;
  padding: 8px 16px;
  display: inline-flex;
}

li a {
  
  color: #000;
  padding: 8px 16px;
  text-decoration: none;
}

/* Change the link color on hover */
li a:hover {
  background-color: #555;
  color: white;
}

.active {
  background-color: #4CAF50;
  color: white;
}

header {
  background-color: #666;
  padding: 30px;
  text-align: center;
  font-size: 35px;
  color: white;
}

section {
  display: -webkit-flex;
  display: flex;
  height: max-content;
}

nav {
  -webkit-flex: 1;
  -ms-flex: 1;
  flex: 1;
}

.shitinthemiddle {
  -webkit-flex: 3;
  -ms-flex: 3;
  flex: 3;
  background-color: #f1f1f1;
  padding: 10px;
}

footer {
  background-color: #777;
  padding: 10px;
  text-align: center;
  color: white;
}


@media (max-width: 600px) {
  section {
    -webkit-flex-direction: column;
    flex-direction: column;
  }
}