.sidenav {
  z-index: 10;
  background-color: #1d1f31;
  box-shadow: 0px 0px 15px 0px #000;
  width: 225px;
  height: calc(100vh - 65px);
  overflow-x: hidden;
  overflow-y: scroll;
  position: fixed;
  left: -225px;
  top: 65px;
  transition: 0.25s;
  @media (max-width: 991px) {
    height: calc(100vh - 65px - 55px);
  }
  @media (max-width: 572px) {
    top: 100px;
    height: calc(100vh - 105px);
  }
}

.sidenav.open {
  left: 0px;
}

.sidenav a, button{
  text-decoration: none;
  font-size: 20x;
  color: lightgray;
  margin-left: 20px;
  display: block;
}
.sidenav a:hover {
  color: white;
}
.sidenav nav {
  height: auto;
  padding-left: 20px;
  padding-right: 20px;
  padding-top: 30px;
  padding-bottom: 50px;
  @media (max-width: 572px) {
    padding-bottom: 100px;
  }
}

/* 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;}
}