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

.sidenav a {
  padding: 8px 8px 8px 32px;
  text-decoration: none;
  font-size: 25px;
  color: #818181;
  display: block;
  transition: 0.3s;
}

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

.sidenav #closebtn {
  position: absolute;
  top: 0;
  right: 5px;
  font-size: 36px;
  margin-left: 50px;
}
.sidenav.openNav {
    width: 320px;
}
#mobileMenuIcon {
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 50px;
    z-index: 3;
    cursor: pointer;
    color: #00171f;
}
@media screen and (min-width: 768px) {
    .sidenav {
        width: 0px !important;
    }
}
@media screen and (max-height: 450px) {
  .sidenav {padding-top: 15px;}
  .sidenav a {font-size: 18px;}
}