/* Fixed sidenav, full height */
.sidenav {
  xposition: fixed; top: 56px;left: 10px;
  /* if i fix this here directly it is not part of the float set
so put it inside a first column  */
  float:left;
  xheight: 70%;
  width: 160px;
  /*z-index: 1;*/
  background-color: #046;
  overflow-x: hidden;
  padding-top: 20px;
}

/* Style the sidenav links and the dropdown button */
.sidenav a, .dropdown-btn {
  padding: 6px 8px 6px 16px;
  text-decoration: none;
  font-size: 16px;
  color: yellow;
  display: block;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  outline: none;
}

/* On mouse-over */
.sidenav a:hover, .dropdown-btn:hover {
  color: #fff;
}

/* On mouse-down */
a:active  { background-color: #3e8e41;  box-shadow: 0 5px #666;  transform: translateY(4px);}

/* Add an active class to the active dropdown button */
.active {
  background-color: darkgreen;
  color: white;
}

<!-- /* Dropdown container (hidden by default). Optional: add a lighter background color and some left padding to change the design of the dropdown content */ -->
.dropdown-container {
  display: none;
  background-color: #033;
  padding-left: 8px;
}

/* Optional: Style the caret down icon */
.my-caret-down {
  float: right;
  padding-right: 8px;
}

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