.sidebar {
  height: 100%;
  width: 0; 
  position: fixed; 
  z-index: 1;
  top: 0;
  left: 0;
  background-color: rgb(90, 90, 90);
  overflow-x: hidden;
  padding-top: 60px;
  transition: 0.5s; 
}
.sidebar a {
  text-decoration: none;
  font-size: 25px;
  color: #818181;
  display: block;
  transition: 0.3s;
  position: sticky;
  line-height: 50px;
}
.sidebar a:hover {
  color: #f1f1f1;
  font-size: 30;
}
.sidebar .closebtn {
  position: absolute;
  top: 0;
  right: 25px;
  font-size: 36px;
  margin-left: 50px;
}
.sidebar .home {
  position: absolute;
  top: 0;
  right: 140px;
  cursor: pointer;
  margin-top: 4;
}
.sidebar .home:hover {
  width: 41;
}
.openbtn {
  font-size: 20px;
  cursor: pointer;
  background-color: rgb(112, 112, 112);
  color: white;
  padding: 10px 15px;
  border: none;
  position: fixed;
}

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

#main {
  transition: margin-left .5s; 
  padding: 20px;
}
@media screen and (max-height: 450px) {
  .sidebar {padding-top: 15px;}
  .sidebar a {font-size: 18px;}
}