body {
  font-family: Georgia;
}

.header {
  height: 200px;  
  width: 100%;
  overflow: hidden;
  background-color: #f1f1f1;
  padding: 20px 10px;
}

.sidenav {
  height: 100%;
  width: 250px;
  float: left;
  position: fixed;
  z-index: 1;
  left: 0;
  background-color: #111;
  overflow-x: hidden;
  padding-top: 20px;
  padding-left: 20px;
}

.sidenav a {
  padding: 6px 6px 6px 28px;
  text-decoration: none;
  font-size: 25px;
  color: #818181;
  display: block;
}

.sidenav a:hover {
  color: #f1f1f1;
}

.main {
  margin-left: 300px; /* Same as the width of the sidenav */
}

@media screen and (max-height: 450px) {
  .sidenav {padding-top: 15px;}
  .sidenav a {font-size: 18px;}
}