.sidenav {
  width: 200px;
  top: 5px; 
  left: 5px; 
  background-color: transparent;
  color: #681C22;
  overflow-x: hidden;
  overflow-y: auto;
  z-index: 1;
  position: fixed;
  height: auto; 
  max-height: 100vh; 
  padding-bottom: 0; 
}

.sidenav a {
  background-color:transparent;
  color: #681C22;
  text-decoration: dotted underline;
  -webkit-transition: 0.25s; }
  
.sidenav a:hover {
  opacity: 0.7;
  letter-spacing: 1px;
  -webkit-transition: 0.25s; }