style.css

.sidenav {
    height: 100%;
    width: 0;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    /* From https://css.glass */
background: rgba(255, 255, 255, 0.47);
border-radius: 16px;
box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
backdrop-filter: blur(5.4px);
-webkit-backdrop-filter: blur(5.4px);
border: 1px solid rgba(255, 255, 255, 1);
    overflow-x: hidden;
    transition: 0.5s;
    padding-top: 60px;
    text-align:center;
  }
  
  .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: 25px;
    font-size: 36px;
    margin-left: 50px;
  }
  
  @media screen and (max-height: 450px) {
    .sidenav {padding-top: 15px;}
    .sidenav a {font-size: 18px;}
  }