.CSsidenav {
  height: 100%;
  width: 0;
  position: fixed;
  z-index: 1;
  top: 30;
  left: 0;
  background-color: #DCDCDC;
  overflow-x: hidden;
  transition: 0.5s;
  padding-top: 100px;
}

.CSsidenav a {
  padding: 8px 8px 8px 32px;
  text-decoration: none;
  font-size: 20px;
  color: #818181;
  display: block;
  transition: 0.3s;
}

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

.CSsidenav .closebtn {
  position: absolute;
  top: 0px;
  right: 22px;
  font-size: 50px;
  margin-left: 50px;
}

#CSmain1 {
  transition: margin-left .5s;
  padding: 34px;
}

#CSmain2 {
  padding: 15px;
}

@media screen and (max-height: 450px) {
  .CSsidenav {padding-top: 20px;}
  .CSsidenav a {font-size: 16px;}
}