.sidenav {
  height: 100%;
  width: 0;
  position: fixed;
  z-index: 1;
  top: 0;
  left: 0;
  background-color: #111;
  overflow-x: hidden;
  padding-top: 60px;
  transition: 0.5s;
}

/*Three lines*/
#open_nav {
  width: 35px;
  height: 5px;
  background-color: white;
  margin: 6px 0;
}
.openNavDiv {
  margin-left: 3px;
  margin-top: 2px;
  width: 39px;
}

.sidenav a {
  padding: 8px 8px 8px 32px;
  text-decoration: none;
  font-size: 26px;
  color: #818181;
  display: block;
  transition: 0.7s;
}
.sidenav a:hover {
  color: #f1f1f1;
}
.sidenav .closebtn {
  position: absolute;
  top: 0;
  right: 25px;
  font-size: 36px;
  margin-left: 50px;
  color: white;
}
/* Style page content - use this if you want to push the page content to the right when you open the side navigation 
#main {
  transition: margin-left .5s;
  padding: 20px;
}
*/

/* On smaller screens, where height is less than 450px, change the style of the sidenav (less padding and a smaller font size) */
@media screen and (max-height: 450px) {
  .sidenav {padding-top: 15px;}
  .sidenav a {font-size: 18px;}
}