.sidenav {
  height: 100%;
  width:0;
  position:fixed;
  z-index:10000;
  top:0;
  left:0;
  background-color:#111;
  overflow-x:hidden;
  padding-top:60px;
  /*transition:all 0.5s;*/
}

.sidenav a {
  padding: 8px 8px 8px 32px;
  text-decoration:none;
  color: #818181;
  font-size: 18px;
  line-height: 24px;
  display: block;
  /*transition: 0.3s;*/
  border-bottom:1px solid #333;
}

.sidenav a:hover{
  color: #f1f1f1;
}

.closebtn {
  position: absolute;
  top: 0;
  right: 25px;
  font-size: 36px !important;
  margin-left: 50px;
  border:0!important;
}

.sidenavBg{position:absolute; z-index:9999; width:100%; height:1000px; background:#000; opacity:0.5;}


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

html, body{
  height:100%;
}