.sidebar {
  height: 100%;
  width: 0;
  position: fixed;
  z-index: 9999;
  top: 0;
  left: 0;
  background-color: rgba(0,0,0,0.9);
  overflow-x: hidden;
  transition: 0.5s;
  padding-top: 60px;
}

.sidebar a {
  padding: 8px 8px 8px 24px;
  text-decoration: none;
  font-size: 21px;
  color: #818181;
  display: block;
  transition: 0.3s;
}
.sidebar-list {
  width: 250px;
}
.sidebar a:hover {
  color: #f1f1f1;
}

.sidebar .closebtn {
  position: absolute;
  top: 0;
  right: 0;
  font-size: 36px;
  margin-left: 50px;
  color: rgb(253, 126, 20);
  background-color: #000;
}

.openbtn {
  font-size: 18px;
  cursor: pointer;
  background-color: #fd7e14;
  color: #000;
  padding: 8px 25px;
  border: none;
  border-radius: 25px;
}

button:focus {
  outline: 0;
}

.openbtn:hover {
  background-color: #444;
}

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

.root-nested {
  list-style-type: none;
  margin: 0; /* To remove default bottom margin */
  padding: 0; /* To remove default left padding */
}

.nested {
  list-style-type: none;
}